[Projoy] Having recently discussed with three of my closest mates (all of us are 40ish to 50ish) what we would do differently if we had our time over again, the answer was unanimous, unambiguous and immediate : shag more girls while we had the chance - by being (a) bolder, (b) unconcerned about rejection and (c) less fussy. (Substitute as necessary for your gender and sexual orientation) - That's the best advice our collective 200-odd years can come up with.
As someone who's never ever ever been a hit with the ladies, there's probably no one on this planet less fussy than me. However, if anyone here breathes the words, "beggars can't be choosers," they'll get a slap for preaching to the choir. Sadly. 'Tis a lonely life I lead.
[JLE] I would hazard a guess that Blob's advice also applies to those over 30 who haven't got lucky yet. Besides... there's nothing wrong with a younger man.
You should tell that to the ladies I've had a liking for on occasion, penelope. Speaking for myself, I've been quite keen on ladies a couple of years older than myself, but tended to be rebuffed because I was too young, and they were without exception always partial to older men.