Apologies for taking ages to come back to the thread. I was held up from responding by real life.
?Creating a world and its inhabitants and then torturing them with terrible diseases is, in my opinion, morally reprehensible.?
Your assertions remind me of a particular passage in the Quran regarding the conversation between God and the angels before the creation of human beings. I hope you dont mind if I go in to a bit of Islamic theology with you.
?And [mention, O Muhammad], when your Lord said to the angels, "Indeed, I will make upon the earth a vicegerent." They said, "Will You place upon it one who causes corruption therein and sheds blood, while we declare Your praise and sanctify You?? Allah said, "Indeed, I know that which you do not know."? Holy Quran: Chapter 2; verse 30
The same questions you are asking about polio the angels asked God that about us according to the Quran. Isnt it morally reprehensible to create a being that is capable of tremendous cruelty, malice and evil? From their perspective that is all that we were; corrupt, violent and disobedient creatures as opposed to themselves who were good, perfect and obedient to God. It reminds me of William Blakes poem ?The Tiger? where the tiger is portrayed as evil and dreadful in comparison to the lamb. But is the Tiger inherently evil? Are we human beings inherently evil? Well God at least doesnt think so as you see when the verses continue.
?And He taught Adam the names - all of them. Then He showed them to the angels and said, "Inform Me of the names of these, if you are truthful." They said, "Exalted are You; we have no knowledge except what You have taught us. Indeed, it is You who is the Knowing, the Wise." He said, "O Adam, inform them of their names." And when he had informed them of their names, He said, "Did I not tell you that I know the unseen [aspects] of the heavens and the earth? And I know what you reveal and what you have concealed."? Holy Quran: Chapter 2; verse 31-33
God demonstrates to the angels that this being is an intellectual being that is capable of thinking and acquiring knowledge. In this way he is superior to the angels who are programmed to have a limited amount of knowledge which is necessary for them and are unable to think for themselves. Why did human beings need intellect and the ability to acquire knowledge? Because in the earlier passage God makes it clear that ultimately this being was designed to live on earth and to be God?s vicergent on Earth. For those who are unfamiliar with what vicergent means (Im not being patronising I was unfamiliar with the exact meaning of the word) it is ?A person exercising delegated power on behalf of a sovereign or ruler?. So God, according to the Quran, created mankind with the intention of them being a representative of His on Earth to exercise His will (in the same way that a deputy would exercise the will of the ruler) and in order for them to fulfil that role they had to have the ability to reason and think.
This is where the Quran differs from the Bible. Islam rejects the Christian concept of original sin and the notion that all humans are born sinners due to the actions of Adam. God says in the Quran:
?And no bearer of burdens shall bear another?s burden.? (Quran 35:18)
Human beings were not sent to earth as a punishment for Adam?s actions and were not made to carry the burden of his sin. It was the intent of God in the first place that Adam and his descendants would live on Earth for a period of time. God tested Adam so that he could learn and gain experience. By eating from the tree and disobeying the orders of God he showed that he was capable of making a decision on his own even if it was the wrong one. He then learnt that whenever he commits a mistake (which he and his descendants were bound to do because they have free will) the approptiate response is to seek the forgiveness of God. In this way God prepared Adam for his role on earth as a caretaker and a moral being.
This is all theological background to the Islamic response to the problem of suffering but the part that is applicable to your statement and made me think of you is where it says ?? know what you reveal and what you concealed?.? What is revealed in the earlier passages (in the question of the angels) is the human beings capability to do harm but what is concealed is their ability to do good. Human beings are also capable of using their intellect and free will to do a tremendous amount of good: i.e. to be kind, generous, loving, selfless and thoughtful. There were two sides of humanity and you just focus on one you are doing an injustice to the greater proportion of humanity who are good.
Your question focuses on one negative aspect of life which is that we can catch diseases which cause us pain or can kill us and you blame that on God. However that is not the whole story. We also experience and see beauty, health, prosperity, life, birth, wisdom, intelligence, growth and progress. Dont you also attribute these blessings to God? You want to attribute only the negative aspects of life to God and ignore all the positive aspects and that is unjust. Yes we experience suffering in the world but is that the norm or is it the exception. I would say it is the exception. We get sick sometimes but most of the time we are healthy. There are famines but most of the time people have enough to eat. There are natural disasters occassionally but most of the time there are no earthquakes, tsunamis, hurricanes etc. Those times where things do not go right God is not doing nothing about it. He has created human beings to act as God?s representatives and it is at these times where we intervene to end suffering that we are acting out His Will.
?Allah will say on the Day of Judgment, ?O son of Adam, I was sick and you did not visit Me.? He will say, ?O my Lord, how could I visit You, when you are the Lord of the Worlds.? Allah will say, ?Did you not know that My servant so-and-so was sick and you did not visit him? Did you not know that if you had visited him, you would have found Me there?? Allah will say, ?O son of Adam, I asked you for food and you fed Me not.? He shall say, ?O my Lord, how could I feed you and you are the Lord of the Worlds?? And Allah will say, ?Did you not know that My servant so-and-so was in need of food and you did not feed him? Did you not know that if you had fed him, you would have found that to have been for Me?? ?O son of Adam, I asked you for water and you did not give Me to drink.? The man shall say, ?O my Lord, how could I give You water, when You are the Lord of the Worlds?? Allah will say, ?My servant so-and-so asked you for water and you did not give him to drink water. Did you not know that if you had given him to drink, you would have found that to have been for Me.? (Hadith Qudsi. Muslim, Hadith no. 4661)
The above hadith reinforces that it is not God?s intent for us to accept suffering or to allow it to continue but that we are expected to do something about it. I hope that makes sense. We are the divine intervention because we have been given the capability through our reason to solve many of the problems we face on Earth.