There was a previous thread on this topic that had a lot of great responses, but I can't find it now.
Anyways, I used to be much more sensitive about telling my age (35), but lately I have pushed myself to not care about it so much. I feel the best about myself and my bod right now. And I have many beautiful friends who are my age or older, and it encourages me greatly when they don't hide their age--Yes, you can be a knockout over 30, and over 40.
It's funny, a young co-worker (24) asked me my age last week. He said he could tell I wasn't his age, but he couldn't figure it out...he said that older people were usually lame (but that I wasn't, of course, lol. What else was he gonna say?). I think by that he meant settled into homey routines and also dismissive of those younger than them. So I was perfectly willing to tell him, as that can help to destroy another stereotype, eh? He said I looked 30. I told him he looked...23. :P
What does bother me though is the push for women to be so young in the media. Like in our own Titty Board forum, I always see tons of threads pushing "Teen!!" and "Sweet Young Gal" and whatnot. Come on.