Intelligent design is consistent with any faith system I can think of, because most faith systems believe that there is a creator.

The universe is a soul making machine, and part of that process is learning, maturing, and growing through difficult and challenging and painful experiences. The point of our lives in this world isn't comfort, but training and preparation for eternity.

So much of the world's suffering results from the sinful action or inaction of ourselves and others. For example, people look at a famine and wonder where God is, but the world produces enough food for each person to have 3,000 calories a day. It's our own irresponsibility and self-centeredness that prevents people from getting fed.

I’ve seen far too many Christians who are more than willing to travel halfway around the world to volunteer for a week in an orphanage, but who cannot bring themselves to take the personal risk of sharing Jesus with the co-worker who sits day after day in the cubicle right next to them.

Doubts can produce positive side-effects - if you work toward resolving them.

I find the evidence for the deity of Jesus and the reliability of the Bible to be powerful and persuasive, and that evidence has only gotten stronger over the years.

In short, I didn't become a Christian because God promised I would have an even happier life than I had as an atheist. He never promised any such thing. Indeed, following him would inevitably bring divine demotions in the eyes of the world. Rather, I became a Christian because the evidence was so compelling that Jesus really is the one-and-only Son of God who proved his divinity by rising from the dead. That meant following him was the most rational and logical step I could possibly take.