When I tell people that there are no benefits to feeling like an outcast, responses like "that's BS, some of the greatest poets and artists were lonely outcasts" come up. Who were these lonely outcasts? Kurt Cobain? His ability to pin lyrics couldn't stop him from feeling depressed. This may be an inappropriate analogy, but wishing you were as capable as other people of finding a sense of belonging but powerless to find one is as bad as having a terminal illness, wishing there were ways to make the disease disappear, and knowing that you wouldn't be as healthy as others. I know comparing yourself to other people is unhealthy as depression goes, but it's unavoidable in social situations. I think with people with devastating illnesses, it is unavoidable to avoid comparing yourself to healthy people since there may be family members that don't live with the illness. It sucks watching people achieve things you like to achieve but can't yourself. There is nothing beneficial about that.