I feel your pain.
I'm 38 and I've been playing RPGs in one form or other for thirty years now. Although that includes a long layoff in the nineties.
I have found it well-nigh impossible to find gamers my age and at my station of life. I was the oldest in my last group; the rest were all in their twenties. I'm married; none of them were. I have a child; none of them do. I'm wanting to talk about my daughter's latest escapades at preschool; they're all talking about how cool kung-fu movies are.
The other problem I've found is that RPGs just aren't worth the work anymore. I love video games and board games, and I'm starting to think that since my time is at such a premium (especially with a four year old child) that I'd rather stick with those for my gaming pleasures.
On that note: last week some friends came over for a five-hour session of ARKHAM HORROR, the Call of Cthulhu boardgame. No rules bickering, no uber-powered characters gleaned from umpteenth source books, no hours of prep for me ahead of time (I usually DM). Instead, we set up the game and had a hell of a good time gaming. Instead of twenty minutes of fun spread out over five hours (which is what D&D 3.5 sessions often become), it was five hours of solid gaming goodness.
Now THAT is what I've been missing.
The other day I took out the old Nintendo GameCube and started playing through Resident Evil 4 again. Damn, was that fun. Give me THAT anyday over debating about attacks of opportunity with some egghead who has more rules knowledge than social skills.
To get my D&D fix, I'm starting to consider the boardgame Runebound. I suspect it may very well offer the best of both worlds.
Anyway, the tabletop RPG hobby is dying. Fewer and fewer people look at the 1000+ pages of rules and say, "Why?"
It's getting harder for me to answer that same question.