A religion with high standards for members is effectively doing evolutionary selection for its group based on these standards. Most religions encourage in-group breeding. Good religions encourage monogamy which is eugenic and discourage promiscuity which is dysgenic. Monogamy selects for responsible parenting while promiscuity selects for immoral behavior through Fisherian selection. I wrote a long post about these ideas here: http://www.mikraite.org/Human-Evolution-tp17.html Religion is the only practical solution. Political solutions are simply not practical. But a small group of people could form a eugenic religion.