Well I lived on and off with my folks til I was 23 and it rocked. Mum cooks the best meals (don't they all) and Dad screwed me over charging me for 50p an ironed item and mum charged a tenner for minting my room (wish she was about to do that now!) All of my mates had keys, I had a massive room and I could smoke as much as I liked. Dad would even wake me up when I fell asleep on the stairs after a night out drinking. I totally DESTROYED their house twice due to house parties getting out of hand and they still didn't throw me out.
But that said I now live with my three best mates and I'm having the time of my life. We've been together 3 and a half years now and it's been all good. Granted they bollock me more than my parents did everytime I lose a key, but I wouldn't have it any other way.