Just like Vinnie said, I don't know whether there is a God or not. However, I find it highly unlikely that there is a God. To me, the idea of an omnicompetent Creator is illogical at best. For example, it is impossible to have an ALL KNOWING (omniscient) God if you believe in free will, not to mention that God can't be the creator of knowledge since God would have to KNOW how to create knowledge, and you can't KNOW how to do ANYTHING without KNOWLEDGE. It is impossible to have an ALL GOOD (omnibenevolent) God if gratuitous evil exists. As far as omnipotence (all powerful) goes, there's an old philosophical problem that can pretty much dispel the notion of an all powerful God: Could God create a rock that is too heavy for even HE to lift? If God cannot LIFT this rock, then He is not all-powerful. If God cannot CREATE this rock, then He is not all powerful.

Also, pretty much anything in the Bible can be explained scientifically, and anything that can't be explained scientifically will be one day. Until then, however, most people who are religious use the Gap Theory, meaning that whatever science CAN'T explain, they fill in the gap with "God."

At the end of the day, none of us will REALLY know if there's a God, Heaven, or Hell until we die.