You just described India's current population growth. The responsible rich and middle class couples are living a good life without kids while the illegal immigrants and the people who can't afford are having 4-5 kids
And the politicians (both from the left and right wing) love the dumb and uneducated.
My comment was meant more as a question about the development than an appeal. Even if responsibility is an inheritable trait, society could be better off e.g. if people worry less.