I reject the idea that moving away from home is a necessary step to becoming a self sufficient adult. You don't have to move out to start taking care of yourself - you just have to pull your own weight, to contribute equally to bills and upkeep without having to be asked. Sure it's easy to fall into old routines, but I would argue that if you can't be independent while living with others then you really aren't independent.

I live away from my parents, but that was a choice of practicality - the amount of money I make by doing so vastly outstrips the amount I would save by living at home.