There are a lot of available women around who are freely giving of their sexual favors -- but only to certain set of men who I'll refer to as the Alpha Males, the guys who women compete for. The "Mr Big" type from Sex and the City. Prince Charming.
For somebody in this set of males, it's a target-rich environment. You sleep with a woman until she starts bothering you about "commitment", and then you move on to a younger/hotter/tighter replacement. Women complain about this type as being "afraid of commitment", but the reality is that the guy has no need to commit to one women because he is a sought-after commodity (at least until he turns 40 or so)
Eventually a woman who's been chasing Prince Charming after Prince Charming gets tired of the "pump-n-dump" routine, generally as she approaches 30 and senses her market value starting to precipitously decline, and decides to settle for Mr Average.
There's a good article discussing the phenomenon SEXUAL UTOPIA IN POWER
He was a cutie when he was Detective Logan in "Law & Order," and also in "The Rough Riders," where he played a scion of the Wadsworth family. But he aged BAD.
I hate myself for knowing this stuff.