Nope, I'm friendly when I'm around people, but generally being socially withdrawn owns, you plan your day however you want and don't have to worry about what your friends want to do and what they're up to.
When I hang out with people, it's because I need a spotter or a belayer, occasionally it's because they entertain me, but I'm always doing whatever I do for me. It's good stuff, I train for eight hours most days and I don't feel obliged to punch my mates in the face.