If you believe in the Big Bang theory, then explain what came before that - and in that case, what came before that. If you dont, then what is your opinion or belief?
My own personal opinion is that the answer is so simple, it defies logic:
Space has allways been there and there was nothing before that because it has allways existed!
I also believe that (if there is a God/Creator/Thing/Entity/Whatever - whatever your definition is) - he is only OUR God/etc/etc and that other Gods/etc/etc exist in other universies or/and Galaxies.
Please keep this on a nice level with good deap discussions and no trashing please. Everyone has a right to their own opinion without being flamed - including lil'ol'me