Family and friends are a great support, but only if they know there is hope. I don't know if you've shown them that. It's a crappy situation, but a lot of people think that depression is fake. They see the commercials for zoloft and think to themselves "Why don't those people suck it up and just quit worrying?". They will be sympathetic and help you, but they will never have as much patience for you as you do yourself.

Fact is, we are on our own in sickness and health.

Don't discount what they have done for you, though. They did help you during a hard time. They may be your parents, but this isn't their fault. They played by the rules- fell in love, had a family, raised you. Life isn't always fair, these will always be more your problem than it is theirs. We can only hope to take our experiences and change minds and try to create a future where people take notice and care for each other in abundance. That's what this forum is for, after all. However we can't give you shelter either.

These things you have to do, are possible. Perhaps easy.
Get some food stamps if you dont have a job. My friend gets 200 a month. Tell your parents you can help pay for food and they might let you back in.