If it anything like the UK, its very very hard to get disability. Even harder now the country is making cutbacks - and the USA has made cutbacks too hasn't it?

I would not rely on this source of income as your life plan if you can help it. Nor the social housing. These places are not easy, and nor is trying to make ends meet on the little people get for benefit. It may be easy to stretch if living at home with your parents, but when you're away with a ton of bills to pay, well, its hard. More than hard.

Why are you adamant not to get a job? Why not at least try and get part-time? Maybe it will show your parents that you are willing and trying.