First, atheism isn’t a religion. Atheism is simply lacking a belief in a god. Atheism is the absence of religion.
Second, I’m actually not an atheist. I consider myself more of a deist. I think there probably was some sort of higher power that set all of this in motion, but I’m not married to that belief, and certainly wouldn’t purport to argue the nature of such a being, because there is no evidence to support it.
Finally, your arguments basically amount to two main points: 1) You’re not capable of being moral without believing in a sky fairy, and 2) Science doesn’t have all of the answers yet, so you’d prefer to just make up answers instead.
For the first problem, there are many, many arguments why this is simply not the case. I’d recommend a reading of “The God Delusion” for an in-depth scientific answer to that. The short version is that evolution naturally results in communal mammals having a sense of right and wrong without any belief in a sky fairy being necessary. In fact, since the sky fairies are all man-made, anyway, their moral laws all have this evolutionary origin. For the second problem, I really don’t know how to answer you. Making up answers just to satisfy yourself because science hasn’t discovered everything yet is pure silliness.