I can see some people (especially extroverts and feelers) suffering a great deal if they ever become lonely or isolated. But for some reason this doesn't bother me. I'd rather have good friends and the joy it all brings, yes, but I don't and I'm living just fine. Maybe it's that I'm alone (like spending time alone), but not lonely. I suppose if I ever started getting feelings of loneliness (why, I don't know), then it would start eating away at me.