Board games tend to attract young people. I know there can be a few oddballs who make the group technically appear to range from 12 to 80 or something, and like one or two girls who make it technically have women there. But if 90% of the group is 12-25 year old boys and young men, this seems like an inefficient way to meet people you can really hang with as an older guy, and also an extremely inefficient way to get dates. As long as you enjoy it and know what you're getting into I guess it's fine. Sometimes being the old man with a few extra resources can be beneficial. But I'm not looking for more work than I already have.

I guess I haven't gone to too many boardgame meetups, but D&D seems to have a pretty decent age spread to me; in fact, it tends to lean older than younger.

I have no comment on the dating aspect; I'm monogamously married, and have no particular opinion on the matter, though I will say that D&D leans so heavily male, I can count the number of women I've played with in the past six months on two hands without needing fingers. It's a problem in the hobby. :/