A lot of the events and spaces I go to have people who hang around and chat.
I agree that internet use has had an impact, but I think it's easy to underestimate how much situations change as you grow up. Now that I have kids, it seems like we're always ending up in spaces where people are hanging out and chatting. As far as my kids know, that's just the way the world works.
I thought the same up through college, then I graduated and suddenly spontaneous socialization ended. I had to change my habits to go find other people.