aaargh i'm supposed to be grown up.

Evan,my eldest at 20, is heading off for the seemingly mandatory year in Australia today. It seems to have crept up on me. I mean, when did my baby boy get to this level of independence? It seems like yesterday i was off touring around Europe trying to find myself, only to wake up one morning to find I have a son the same age I was, embarking on a trip i wouldn't have dreamt of back then. Should I start to behave more conservatively and leave the devil-may-care attitude to those young and fit enough to carry it off? Have I been behaving more conservatively for years unbeknownst to myself? Is this where the mid-life crisis kicks in? If so, please shoot me if you see me wedged into a small convertable car in the next decade or so.