People are having casual sex earlier together, living together without getting engaged, etc. Marriage penalty when filing taxes. Half end up getting divorced - do you feel lucky? Then the post-marriage stuff: who stays up with the ******, does the housework, drives the **** to activities, whose ****** do you spend the holidays with. Money - is one a spender, and the other a saver. Do you look at your GF's *** - who is huge, and wonder if that will be your GF when she hits 40? You get my drift.