What are the reasons you don't believe this theory?

[Zenith]

For a start, I could not possibly believe that the Universe and Earth were "created" by anything other than natural occurrences.

ok, that's an argument. Though it has no justification (proof/evidence to do that). And if the natural occurrences started afterwards, perhaps this would be an argument no more.

Next, which version of humans was created by the "gods"? Did they keep creating or has everything evolved since the gods created earth?

Or, did the gods merely place the first single life cell on earth and everything has evolved since then, seeing that all life forms on this planet have a common DNA link?

Well, this goes in logic + modern science, which I said there would be explanations that would not contradict them. Just assume they're ok, because I don't want to use my imagination further, and it doesn't do anything if I do that.

If there were gods, they would tell everyone that they exist, not one person or a small group of people.

That sounds as an argument... Though unjustifiable - i.e. why??

I can think of not a single reason why gods would punish people who didn't believe that they existed. That doesn't make any sense whatsoever. I would be dead anyway, so how could I be punished?

Well, even in pagan religions before Christianity there was the idea of punishment and reward after death. So if pagan religions before Christianity believed in afterlife, then why is it wrong for my theory with gods to support afterlife??

It's all a load of nonsense. Sorry.

I know the theory is a lot of nonsense. But though it is not believed, there are lots of nonsense theories out there that are believed. Imagine the relatively new religion wicca: how would you see a man that is standing beside you and is bowing down and worshiping the image of this god and asking him for his help? Now, I don't think my theory is worse than that! So, why do people believe wicca?? Is my theory more unbelievable than that??