Let's Not Live Forever

The most annoying subset of "cutting edge" thinkers is the one composed of people who want to eradicate all disease (and aging) so that our life spans might double or triple, or indeed so that we might live forever. The first question that occurs to me when I hear them going on is, What the hell would we do with all that time? I picture a guy, 174 years old, greeting people at Walmart. Or worse, a woman 230 years old sitting at the same desk job she's been working for 191 years. On the plus side, there would be 400,000 reruns of Law & Order to watch, so that's something. Other questions: Would people lose their sex drive, and if so, when? Age 150 or so? What would constitute a May-December relationship?