I'm currently taking a day class in programming for Android. I am surrounded by college-age women; e.g. half my age. While many of them, like young Nichoel the cosplayer in the previously linked video, are beautiful, they are not attractive to me. It's a big relief; when I was young I figured attraction to young women would be a pain in the ass when I got old. Nope. I acknowledge the beauty without desire. I never really expected to be able to able to appreciate the beauty of a nubile woman so much in the abstract; when I was young I really couldn't separate acknowledgement of beauty from feeling attracted to women. Not that I so much separate it as it is separated for me somewhere subconsciously.
(At least so far; I'm now in the point after my wife leaving where my subconscious is starting to really want to look around for someone new. Too soon for my conscious mind by far.)