This is what would it take for me not to believe in any god:
1. a total lack of evidence, in spite of several thousand years of priests and theologians looking for it.
2. gods depending on magic, such as coming back to life or flying into the sky or being born without any penis-pussy action, or other patently false stories
3. gods that are supposedly all-powerful and compassionate letting millions die of starvation, AIDS, disease, and genocide in Africa, or by tsunamis in Asia.
4. gods that used to talk from burning bushes and hold the sun still, and now disguise themselves as black holes in the nether regions of the universe.
5. gods that stop existing once people stop worshiping them, like Zeus and Baal
6. -----
Wait. I don't need to go on any further.
There almost certainly are no gods