It has changed for me as I age, a bit, and at diffeernt times/moods, it can change again. It's hard to find an older US woman who doesn't drink or smoke, aint fat as a pig and is at all good looking and nearly all the youngsters are so ignorant-vapid that unless you value playing "teacher", they are not very interesting. Also, guys, if any women are reading these posts, going public with your "wrong" viewpoint might cost you.
Women are certainly NOT at their "sexual peak" at age 19!
It's a lot more like late 30's as far as their DESIRE for sex goes (especially if she wants kids and has none) and that is what makes a woman sexy to me. You guys can HAVE all that runway model "chase me you can't have me" bs, I never was interested in that, at all. I had a late 30 something who would do anything for me in order to have a chance at being a momma, to include sex in a tree, in a public park, in broad daylight, with people all over the place, in plain sight (altho 100 yds or so away).