You can't prove God doesn't exist, btw. And you obviously haven't researched religion too well if you think that is the strongest argument we have.
You can't prove that a whole HOST of other things don't exist as well. Egyptian gods, greek gods, allah, jehova, aliens, the lochness monster, bigfoot, harrypotter-esque magic, the tooth fairy, santa clause etc etc etc etc etc etc etc etc
What if I professed that santa clause indeed, left presents under my christmas tree. Prove that he didn't.
What if I told you that my cat, by means of telepathy, told me to kill the prime minister. Prove that it didn't!
Or... what if I made up a god. My god exists in a completely different realm. My god is similar to your god; its omniscient, it created mankind, the earth, the universe etc.. However, my god is non-discriminatory towards homosexuals and heterosexuals, anglo-saxons and asians and negros, buddhists and atheist and catholics and muslims and jews. An actual, all loving god, if you will. IT doesn't distinguishes and only require that we are good human being. It doesn't require me to pray. It's given us the power to conduct our own laws, form our own morality, do whatever we want, though under the laws that we implemented ourselves. Prove that my god is false. C'mon I dare you. I double dare you.