I beilive that there is a creator, mainly because i dont see how everything was started just by a big bang. I mean, what sparked the big bang? if you cant answer that then sciences theory on how life began is just as fickle as us religious types.
I beilive in an afterlife because i just cant imagine not existing after i am gone, i think its impossible for consciousness to be destroyed.
So you scientifics can ask, "well who created god?"
and likewise we can ask, "What created the chemicals that created the big bang?"