I can very much relate.... exept I did it. I cut off... I didn't talk to classmates, drinking-budies, ex-es and so on.... didn't talk with no one who didn't dare to call me up.
two people called in that time... and one is my best friend and the other is my partner now... (other than parents and brother who I was close with)
but this isn't a help at all. I ended up regretting it, because building up a new social-web is.... looks like close to impossible. I realized I need some people who are just buddies.... nothing serious about the relationship and have no pressure on it and it was nicer to be surrounded by different people and not always had to deal with serious talks... I miss reasonless chit-chat and such.... I'm kind of isolated right now and I don't know how it'll change if I move out... I'll just as alone as right now.