You know, I can't give you any words that will change minds. But I will still stand up for faith, even if only to represent so many that still believe and still have experience of God's love. You see I do believe God did something about it, in Jesus. But I'm not going to get into preaching territory. I might be in danger of losing my fluffy status. 
You've heard standard answers anyway. free will, choice, etc etc. In the end they're only words. Often people who come to faith say it isn't words that convince, but God working in their lives and hearts. So I'm not sure why I am here. However, I will doubtless carry on. I quite enjoy the debate, despite knowing it's not something I will ever 'win' 
I think it might come down to hope. What is there if not hope? I found out this morning a lovely lady at church who had terminal cancer died last week. She had hope. She shone with it. It doesn't make it easier, better, less of a great tragedy. But it somehow transcends the mess, the awfulness, in our lives. That evil has an opposite is an important thing, I think.
I can speak for those who some of you are saying must be in a total mess due to God not deigning to heal when I have asked and been asked for, and I have been told unhelpful things such as some of you allude to. But I don't believe the unhelpful things, such as it being my fault, such as God doesn't love me enough, such as I don't have enough faith. These things are toxic and wrong and I stand against them again and again. But I am not in a mess because of these things, because even within the greatest pain I know God in my mess, even in the most hopeless of days I find that hope breaks through.