It really boils down to your relationship with your parents. If it's all fine, then why not? If there are unresolved issues, and being there makes you feel dependent, or makes them feel exploited then better move out. There are other options. I'd rather rent a room from a long-term friend I think (they charged me less anyway!)
I'm going to live with my parents in ER, its a small multi-family house. The aim from the beginning was to avoid debt, so there is no guilt in using it.