For some people, it IS healthy. Some people, suffer from exposure to meatspace based forced or prolonged interaction.
I certainly did when I had my former housemate living here for two years. Got to the point where I literally could not fucking stand her. Although it must be said, that she is a bipolar, borderline personality disorder-ed to the fucking eyeteeth psychotic gorgonslut from hades. Real nasty fucking piece of work. In the end, immediately before I kicked her lying, thieving, manipulative needy bitch arse out of my house, the situation escalated to the point where there were almost swords drawn, probably on both sides.
Came real close to getting messy as hell IMO. Forcing her way into my room when I was fucking getting dressed in the morning, on a psycho hellmaiden rant, going nuts, totally lost it at me for bugger all. I was rather wondering where in the hell her katana was at that precise moment in time, I really didn't want the legal hassle that would probably come if I had had to shoot her.
Although it WAS mighty satisfying to one-bomb the fucker spark out on the floor bwahahahaha. Damn...that was karma in action, that had been fermenting for at least the best (or rather, the worst) part of at least two years.