I guess it depends on what you're there to do. Sometimes I want feedback on a thought that's hyperspecific.

I could wander around town and strike up conversations with strangers and years would pass before I found somebody with the specific set of interests. But there in the depths I can find somebody else who is actually looking to talk about the same niche thing.

I don't know if friends is the right word, I only rarely meet them again later. But for a brief time we were a some kind of partner.