God/Prime Mover is necessary
Take a look at the universe. It's a series of cause & effect reactions. However, there can't be an infinite series of causers. That is impossible. There HAS to be a prime mover, and that mover is god or anything analogous to such. Saying that there are no beginnings is ridiculous IMO, all one has to to do is follow them back.
Some of you might say " but why assume that there must be a beginning when we have yet to encounter it?"
Because it's illogical - just because we haven't encountered it doesn't make it not so. You simply have to decide whether you want to rely on logic, or data.
Hence, because of the necessity of a prime mover, there must be a god. Therefore, isn't it more reasonable to believe in god than to not to?
Suffice it to say that I believe there must some kind of first principle, unmoved mover, uncaused cause, what have you, whether it be the universe or something else.