Replying to Why do you choose?

An avid reader of horrible NSG threads, over the summer it seemed like every other day had a huge religion thread. Many side were taken, mostly science, some God, and a couple Joseph smiths. A few held strong arguments as to why they chose not to follow religion and believe in God. Hardly any supported themselves in a feasible manner in favor of religion although they stuck to what they believed in.

The question I ask is why do you believe or not believe? (God)