I don't know if it's necessarily going to be the case, but I do think one can look at contemporary society and see that certain groups with "rigid" ethical syst

I don't know if it's necessarily going to be the case, but I do think one can look at contemporary society and see that certain groups with "rigid" ethical systems are prevailing over those that don't. Economically, sometimes, but even moreso in a reproductive sense. I'm thinking of groups like the Mormons, Amish, Orthodox Jews, and so forth.