1) lose structure
2) revert to a very immature mentality (i.e. letting my parents take care of everything), and
3) get wildly depressed.
I know I can live without my parents - I've proven that several times over, simply by living over 400 miles away and not coming home every .02 seconds - but it's still too close.
When I graduate, I am not coming back here. Of course, I plan on escaping the USA for The Untamed Wilds of Europe and/or Africa and/or Asia and/or... well, I don't really know where I'll be going, but I'll be going somewhere, dammit. I've got plans. And backup plans. And backup plans to my backup plans. And, if none of those plans work out, well... I don't know what I'll do. But no, I do not plan on returning to the Midwaste.