I used to be lonely even with people around me. I did not feel a real connection. That went away eventually, but it was rough.
Now I have moved to be around my wife's family in a new state about 4 years ago. I do not have one single friend here. All I have is her famliy and I don't really have time for a friend as I work at least 12 hour days. I don't miss friends, but it is kinda sad when you look at it.