This going to sound pretty crude, but those here who know me know that sometimes, that's just how I am: Tap it while it is there, grow old and remember the experience fondly. When you're up to it, find a woman who appreciates you and has a bit more substance to her.
I cohabitated with a 23 year old when I was 39. Not as big a difference, but big enough. She was hot, I was lonely, it lasted as long as it lasted. While I would have enjoyed a deeper relationship, there was no way. Actually, as of this writing ten years later, she's *still* not in a committed relationship, and I don't think she will be for some time to come.
I think we old farts lust after young women on two fundamental levels. First, the obvious...they're nice and taut, things stick up instead of hang down, stretch marks are few and far between, they're lively and fun to show off to our friends. This is the visceral level, and those young tarts can really drain off some of the hormonal stuff in fine style. However, that lasts about as long as the next hormonal draining session, and after several of those, you start looking for that second level, the level of "Something More"...and it just isn't there.
I'm sure there are rare exceptions in this; there are certainly youthful women of great substance and depth, but I'm pretty sure they marry much wealthier men than us.
