Many studies have shown we as human beings require and need social interactions with others. It's healthy for us mentally as well as keeps us from becoming anti-social, etc. I believe some people don't require a lot of human contact and aren't people to worry about.
Having a few quality friends for support & camaraderie makes life enjoyable. You don't have to have a lot of friends, only two or three close people you trust. Good friends help you keep your sanity in a very insane world at times.