Depression definitely makes college a very uphill battle. I know exactly where you're coming from, I started off premed but I did horribly in my classes and that plan got scrapped. It actually took me a total of 6 and a half years(with summer classes almost every summer) to graduate with two bachelor's degrees which ended up being pretty useless. And the social aspect too, it's extremely difficult to be socially active when you are depressed. Trust me, nobody with depression would handle it any better than you have.