p.s. I just want to add that with the obesity-epidemic in the U.S. it is simply NOT true that a woman who is in her late teens or twenties is necessarily in better shape that a woman in her 30s or older. (That may have been the case in the past, but I would argue that that is no longer necessarily true). Also, to put it bluntly, tightness of other body parts has a lot to do with childbirth, how many children one has had, and what one does after children to help one's body spring back into shape (e.g., breastfeeding, exercise, kegels, etc.) But again, a woman in her 30s or 40s who has never had children is probably going to be in better shape "internally" than someone in their 20s who has already had three children.
Sooooo, at the end of the day, if we acknowledge that men are by and large very visual, then I would agree that they want an attractive, youthful-looking, "tighter" woman - but honestly, does anyone think that ALL 20-something year olds fit that description?? And that in converse, no women in her 30s or older would fit that description??
Age, in and of itself, does not determine fitness level or physical attractiveness for any given man. And I would argue the same for women. Everything is ultimately on a case-by-case basis. We are, at the end of day, each unique. When a man 20 years older than me approaches me, I know that part of the attraction, maybe even the ONLY attraction, is my relative youth. However, when a man closer to my age approaches me, I know and understand that he actually finds me, overall, interesting, or he would be approaching the woman who in her 20s (who can offer the one thing that I cannot). As a woman, there is no question in my mind that I would prefer to be with someone who wants ME, not just my relative "youth". And as one man on this thread has already acknowledged, he can be lazier with a younger woman - i.e., doesn't have to work as hard. Also, many men use their relative financial status to simply purchase favor with a younger woman. Maybe that's why even when I was young, I was never attracted to men who were significantly older than me. I believed then, and still believe, that I am worth some effort and that I cannot be bought. My being submissive has nothing to do with my feelings of self-worth.