I like having reasonable suggestions - at the very least it's a good idea to consider these things if I haven't tried them before.

I don't know why you seem to think it would be easy to find like-minded people, though. Inferential distance?

That seems to be hard by default, unless you're living in an area with a high density of like-minded people.

Anyway, I am familiar with meetup.com. I have some meetups I could potentially participate in, though they seem to be mostly for people who want to socialize rather than specific groups for things I am interested in.

And simply meeting people at random seems like a poor way for me to try and find like-minded people. I might do that anyway for the social experience, but it seems to be a rather low return-on-investment strategy.