Mind over matter. If you don't mind, it don't matter !

Your body so you get to figure out what you want to do with it. People twice your age are sexually active so, as others have said here, your current age isn't an issue.

If you're happy that's what's important. 38 however is definitely not "too old" (indeed many women peak sexually in their 40s). Where I used to live in the Phoenix area there was a retirement community where the joke was that they were doing it in the bushes. Lots of repressed lonely retired farmers running out of time, doing it with repressed lonely widows. Better late than never I guess.

Before that, in the Midwest, I saw this phenomenon from a front row seat with my Dad, he was like a teen in his 80s, no so much because he was horny as because he was so inexperienced and after my mother died he was living in a building chock full of widows. The possibilities overwhelmed him I think. "I got it bad" was how he put it. I don't, physiologically or psychologically, feel like I'm headed for that, but I was married 2 more times than Dad too. I've had more opportunity to figure out how overrated sex is. Which is not a knock on any of my wives ... just on the inherent nature of sexuality in the context of our somewhat sexually fucked up society, as well as the practical conflict between work and child-rearing and everything else life demands of you, and what would constitute a really smokin' sex life. Most of life is a buzz-kill; it's amazing any buzz is left most days.

One of the guys in my clique in HS (we were the guys who were in the gifted classes, were very political, atheists, played AD&D like it was our religion, etc) we all exactly described as asexual. It didn't matter to him at all if he was gay, straight, etc - he just didn't care. He was apathetic to the whole subject, and just didn't care.

BTW, as long as your happy, who cares how old you are? You're never too old for a relationship - but only if that's what YOU want. Don't cave to societal or familial pressure.

My friend? He finally found someone he loved - at 49.?

You are most certainly not too old. Being asexual will certainly be a challenge. I would guess that most people are sexual and want to partner with someone who is also. Maybe, you could start a group for people who are asexual.