A final comment on the Arminian blogger who lost his faith. Obviously, every theological tradition has its share of apostates. Calvinism is no exception.
However, here's a man who was a Christian from age 18-40. He has a degree in philosophy of religion, and teaches on the subject.
Yet it only dawned in him when he developed a medical condition that Christian don't always get what they pray for? Surely it doesn't take much personal experience or observation of other Christians to find that out.
Now to some extent his reaction is what Gary Habermas calls emotional doubt rather than factual doubt, although they are intertwined to some degree. I do wonder, though, if his Arminianism didn't create a problem in this sense: so many Arminians define themselves in opposition to Calvinism. That's their frame of reference. They are obsessed with Calvinism.
That can lead to their neglecting to study basic things like the evidence for Christianity. There are many deep lines of evidence for Christianity. But if you devote so much of your time to attacking Calvinism, you may be coasting.
He didn't have much to fall back on when his personal crisis hit. Moral of the story: don't neglect to lay a firm foundation.