Wow, I have and still do experience that same thing, it really sucks too, maybe talk to your therapist about it.
I socially isolate in the 3d world too, I kind of sit alone when at a school function. I do know the feeling too, that you posted here.
Oh, you do NOT clear out chat, it has nothing to do with you, many people come and go different times, in my case we have 3 computers in my house but never fails when I get on, someone needs this one with the "best scanner", geesh, I do not even use the scanner, never learned how
Please do not ever feel people leave around the time you come on, do not take it personal okay? Keep dropping by, and even on chat
Take care, just wish I could of gave you some suggestion on that Lonely thing, it plagues me often. . . maybe that is why I isolate, and come up to my computer room and log on here?
Who knows?

Take care now

DE

In giving advice seek to help, not please your friend
SOLON