This didn't deserve a downvote, it's a good observation of the problem. If you're depressed, it's very hard for people to be around you, and that makes the depression worse.

Yep. In fact, I think that (apart from clinical practitioners who might find it fascinating) the people best positioned to help the depressed are those who've experienced it themselves, and overcome it.

I'm depressed. It comes and goes, but generally in the middle of an episode I don't want to be around other people either, which I think compounds the issue.