Because you asked, I'm 41 and have been at this about 7-8 years.
More importantly, if you're okay looking and in decent shape as you say, OP, don't worry about your age, not at all, so long as you're clean & respectful.
I'm going to assume that you're married, otherwise you'd have experienced the parade of 20-somethings IRL who grew up without daddies around (or whatever) and are henceforth forever in search of some older guy to fill those shoes (shoes? Lol)
I've certainly experienced a wider range in ages with normal civilian relationships, both younger and older, than I have in this hobby; I've seen nothing to suggest that there isn't many many young girls more than happy to spend time with older guys, both on & off the clock. Of course, there's always exceptions, but nothing a quick communication regarding your age can't account for, if that's something you feel concerned about. So: go have fun already! Do what you want to do- you're fine