I'm 46 with 3 daughters. They're beautiful and I enjoy watching them go through all the fun "young stuff". I still feel young but not so youthful anymore I suppose.

I do get a kick in the guts and feel bad about myself now and then when my partner of the same age gets so much pleasure from viewing all the young hot women in their 20's. It makes me feel sad and old that what looks pleasurable to him is always going to be their bodies. Women's taste seems to mature as they age but not men's.
I mean, they still get pleasure from us but their preference would be for us, in a young body and that makes you feel 2nd rate and yeh, old I guess :(