I was thinking about this today and came up with three possible reasons.
1: Origami requires a lot of patience, a chunk of intelligence and the ability to appreciate the smaller things in life, (like a nicely folded piece of paper) and people with these qualities are often the kind of people that I like.
2: There aren't many folders and not many people know about origami. So it's always nice to talk to people who share your rare hobby or are interested in it.
3: I just haven't met the bad ones

It's probably a combination of the three though...
So what's your opinion about this matter?