and there it is... the real reason for believing in no God.
the attempt to avoid judgement even though your conscience tells you what you're doing is wrong and deserves punishment.
I think I understand your reason for making such a statement. My thought on this would include attributing some kind of motivation to you that I cannot be certain about without a deep and personal knowledge of you, so I will acknowlegde that my thought may be incorrect, and I won't publicise them here.
But as you do not seem to have such inhibitions, I will try to address your claim:
There are some things that my conscience tells me are wrong. Mostly, I refrain from doing them. Sometimes I do... for whatever reasons, valid or not, spontaneous or not.
In some cases, I can still justify my actions, understanding that there was no better, no known or even no possible other option in such a situation. Sometimes I regret what I did and feel bad about it.
Sometimes I even feel bad about it because I fear the reaction of others, or even retribution.
But in all those case, I am aware and accepting of the outside agents that can and would react and retribute.
I don't believe in God. I do not fear retribution from a source that I do not believe exist.
That's the direction that reasoning goes.
I am very certain that you have thought that go in exactly the same way. You don't treat cows are holy beings, because you don't believe in Hinduism. You don't avoid stepping on cracks in the pavement because you don't believe in monsters that want to eat your mother if you do.
Or do you seriously and deliberately deny the existence of mother-eating monsters,
because you want to step on cracks, even when your conscience tells you it is wrong?
That is the second part of that position: your conscience
doesn't tell you that stepping on cracks in wrong... or does it?
In very much the same way, my conscience doesn't act up on a lot of stuff that your religion tries to tell me is "sinful". There even are a few instances where my conscience
does tell me that your religious demands are "wrong".
So, no, what you claimed is not the "real reason" for believing in no God.
I cannot and will not speak for anyone but me: my personal reason to be an atheist is because the existence of any form of "deity" is either irrelevant or self-contradicting.
Especially religions like Christianity simply don't make any sense to me.