That's a wonderful question. I like my alone time and can be alone for weeks without it being a problem....its other people who think it's unhealthy. But is it or is it just me being me? I feel lonely in a crowd but not when I'm alone so who's to say if it's bad that I'm alone for long periods of time? Yet when you look at symptoms of depression isolation is mentioned and most people have different ideas of what is too much alone time.