There are behaviors that my conscience tells me are immoral that I enjoy doing. I try to avoid these behaviors for some of the following reasons:
The affects they have on other people.
The affects they have on me.
The affects they have on God.
Sometimes I avoid the behaviors for all three reasons sometimes for just one.
If I lost my faith and became atheist, the immoral behaviors that I avoid because of their affects on God alone would have no reason to be avoided anymore.
If I became an atheist, I would behave more immorally.
It seems to me you’re trying to do moral math here along the lines of, “If I have one less moral source then I have less overall morals.” This would require that one did not replace one's foundation of God morality with something else. It also precludes your remaining moral foundations not picking up the slack and becoming more complex.
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