getting married later in life leads to more promiscuity, abortions, stds, and infertility. people still live about the same amount of time as eons ago- when you factor out infections and childbirth. socrates, plato, jefferson- though some lived even longer, some much shorter. our modern america (and the rest of the world) seems to have a very hard time committing to much of anything- spouses, children, anything that requires putting someone else before ourselves. love grows as people spend time in a relationship- and outlives sexual passion, illness, aging, distress, unemployment, loss of one's own parents or children, the hard stuff of life.