The people who say they care do. I know thinking about it from a non-depressed person's point of view isn't easy, but I'd say I'd like to be by myself 80% of the time. That means I can't support my friends all the time, it doesn't mean I don't care about them. You want to feel needed at work. Go to work because you want to go, remember, if you aren't needed, you wouldn't be employed. 98% of people are bad at communicating their need and appreciation for others, it doesn't mean they don't.