Although I will say, he was super smart and funny. But sadly, all those other things you mentioned too. As well as possibly unstable, and my friend suggests maybe mildly agoraphobic (which I never considered). Sad.
Violin - "hermit-ty" guys - this is a new phenomenon for me. With my limited experience (two) it seems to be middle-aged guys who have had heartbreak in the past and have dealt with it and their depression by gradually letting their social contacts dwindle. They get some of their socialization needs met online, and if sufficiently testosterone-fueled, may occasionally enjoy the company of a woman IF she shows up on their doorstep and doesn't expect them to become a real boyfriend. Usually their closest relationship is with a pet.
So get out there and socialize with your friends, build up your social contacts, don't watch too much tv, and be careful if you'd rather spend more time with your cat than with a girl.