And, as to why we don't believe in your particular God:
The way God evolves in the Bible is quite naked, and known to all students of academic theology, or anyone who has bothered to look at the Hebrew texts a bit.
Judaism starts off as a sacrificial religion, that uses sacred animal fat to keep the temple candles burning, because Yahweh, or El, (his name changes, depending on the day of the week), likes to hang around in the temple and sniff the smell of burning fat. From there, it just gets worse and worse, with Sheol magically becoming a place of torture, around 300BC, and then the Pharisees inventing their own "oral interpretation" of the Torah, because they weren't allowed to change it when they wanted to.
This stifling of Toral development leads to a bit of a problem down the track, when the Pharisees invent heaven and hell. A fictitious person who existed only for 2-3 years, deliberately gets himself crucified, so as not to leave any critical evidence that he existed, and the a chump called Paul, says he is channeling Jesus, and that the people who wrote Matthew got it all wrong, and Jesus was a prophylactic that protects you from the Old Testament.
It's really commendable that Christians left Galatians in the Bible, so that modern day skeptics could see how Christianity was falsely constructed by a lying attention-seeker, straight after Matthew warned us that many false prophets would come in Jesus' name.
I put this down to Jesus' inability to speak clearly. He was unable to write, or get his message out, the first time. Evidence of this, is that he stood before Pilate and refused to have a decent civil conversation with the man, despite that Pilate was obviously a good chap, and his wife was a prophet. Hence we need Paul's drivel in the Bible to clear up all the lies in Matthew.
Paul might, in fact, be as credible as Tania Head (maybe).