What other general reason has there ever been for rejecting any authority?
Let's see . . .
1. The authority doesn't exist.
2. The authority commands people to do immoral acts.
3. The authority lacks the support of the community.
Those are just three off the top of my head. Perhaps you should try harder?
Sadly in the case of the Creator God many have misunderstood what type of authority He is, He is a God of love, he wants what is best for us, but we have been given free will, the chance to choose, and the time to do it in. However denying that He exists does not change His status, only ours.
Simply stating that God exists does not make it so. Surely you understand this? When you are naughty, are you worried that Santa Claus might have seen you do that naughty thing? Do you reject Santa's authority because you want to be naughty?
By the way, could somebody please explain how the simple common ancestor life form, traditionally taught as being the "humble" amoeba could have 290 billion units of DNA- some one hundred times that of the human being when evolution clearly teaches a progression in complexity (and a gaining of genetic information) from simple life forms to the most complex such as yours truly! Perhaps this simple thing will confound the wise, and the "Fact" of evolution will once more "need" to be "in evolution".
We did not evolve from the modern amoeba. The modern amoeba is just as evolved as we are, so you might as well ask how the modern amoeba could have evolved from humans.