No I have never been to South America.
I totally understand what you mean when you say my life has been reasonably nice, and of course you are right. It has been relatively easy for me to change my life in order to be in agreement with the Church's teachings. I do think for people who would not find it so easy, for example someone who is gay, that they may be happier in a faith which will marry them to their chosen spouse etc. And I would encourage them to do that if that is what they chose was right for them. Equally if a gay person decided to live celibate in the Catholic Church I would support that too. However, for the person in your example who was raped by a relative and found themselves pregnant I do not believe that abortion would be the answer that would bring happiness. Nothing could right that wrong, let alone the death of another person.
You ask 'Can you not love the teaching and ideas but still say hang on, this is still wrong for these people' and to a large extent I agree with you. People who cannot afford to give to the Church should not be forced to or guilted into giving money. I don't think that is in contradiction with the churches teaching. In fact the Church should be helping them. However, if someone chooses of their own free will to give out of their poverty then I believe that would bring its own spiritual rewards. Where people are being forced to give money I believe we have duty to try change that, working within the church to do that.
Yes I can, and am, very angry at the awful things the institution has done with power in its name. I am sorry if that hasn't come across in my previous answers. Believe me I do not take lightly the harm which has been done through the perversion of power, and no doubt continues to be done in places. But I can still separate that from the good that the church does.
Use of the barrier method for me IS a tricky one. As I previously mentioned somewhere up thread. I am presently considering whether to use the barrier method myself. I personally cannot see issue with it. And I have read all the arguments and literature a number of times. (I think) It is something I wish the church would change its teaching on, because I see it causing a lot unnecessary harm and distress for people and is in many cases compounding poverty. I understand that may sound very hypocritical because I have previously said what I like about the faith is that I can trust in the church to make the right moral decision. But the church has changed its mind before and I hope that this is a time it will.
I haven't personally come across any hellfire teaching. In my experience that very much isn't the way things are done now. Although obviously I can't speak about what might happen in other countries. Besides the Church teaches that it is possible for non-Catholics to enter into heaven so I'm not sure the 'youll go to hell if you don't believe' teaching is correct. That is one of the things I liked about the faith, that it was more open when it came to salvation than a lot of other Christian denominations where salvation is through faith alone.