'We' do? - Maybe you see that as rational thinking, -- but I can't imagine why.
But can you explain why that isn't rational?
You're thinking is irrational on different levels.
1)- No one here is justifing "killing babies".
2)- No one here is justifing "killing babies because there are too many people".
3)- No one here is claiming that human wisdom is absolute.
4) No one here is claiming that human wisdom ~must~ be the absolute authority. -- But, - we have no evidence of other authority.
But people claiming that morality can be solely based on human reason have. In fact, every worldview that I can think that has made this claim has justified doing so.
4) No one here is claiming that human wisdom ~must~ be the absolute authority. -- But, - we have no evidence of other authority
Sure you do. You got the testimony of lots of people. Or you can weigh socities sincerely based that human rights are endowed by a creator with those that are not.