The extension of “childhood” far beyond sexual maturity has caused many social problems. Social norms should conform to biology — i.e., reality — not the other way around. I think a problem with young marriage now, however, is the severe lack of support, both from social systems and the lack of extended families that typically helped the young couple along. Western nations are hell bent on diverting the vital energies of youth into useless careerism and consumerism.