(Deuteronomy 22: 20-21)
or
(Leviticus 21:18-21)
You honestly think they are better or logical at all?
I can see why rules must be in place to limit infidelity and preserve the stability of the family unit and ultimately society at large. I can see why the options for such rules in primitive tribal time would be very limited.
I can also see the logic in establishing the precedent that drawing closer to God entails increasing perfection. Perfection in thought, perfection in action, and ultimately perfection in form.
So yes I think those passages were a logical means of stabilizing early societies and leading towards long term prosperity. Do I think we should execute people via stoning or forbid the very sick and deformed from entering churches today of course not.
The problem with your argument is that ignores god. God is all knowing and powerful, there was never any ''need'' of any of those laws, god could have made moral laws from the beginning and there would have been no ''primitive'' civilizations at all since they all of them would have followed God's rules, was it really that hard?