My favourite answer to do you believe in GOD?

A deity and evolution are incompatible

I read the bible and the koran and decided that fairy tales were for children

I was always a skeptic (trust issues), but the hypocrisy I ran into during my time in church really turned me off to the whole practice. The sheer number of times I was told I'm going to hell...

I was so religious that I was certain that there was nothing that wasn't true about the Bible. I was completely unafraid to investigate anything I choose to "know God better" after years of investigation into many things I eventually had to admit to myself that it was a lie and I did not believe.

I was not bought up to believe in magic so, it's reliance on magic made it total nonsense to me.

Religious people are some the most dishonest people I know, but as long as they gave money to the church they were praised like saints for their godliness. I was amazed at how often god told them that what they wanted to do was what he also wanted them to do.

When I finally realized that it made no sense to damn a person for being gay (or and addict, etc) but allow a serial sinner a pass to heaven as long as they were saved.