It's worth staying at home to save money, if you actually save your money. Blah blah, it's lame, whatever.
I lived at home until I was 23. It was weak, sure, but now I have an MBA, a wife with a Bachelor's, two cars (paid cash for both) a motorcycle (paid cash), a ****load of firearms, over $60,000 in the bank, and zero debt (I think I have like $100 on my Target card, bleh). I work, my wife doesn't, and we're completely OK. We would have a house, too, but Wife lost her job and we don't want to jump into anything just yet. If we did,it wouldn't be unwise, but we thinking it would be better if we wait for a spell.
My goal is not to brag. I am convinced that if I had tried to move out early, I would be piss broke right now and probably have no degree. I am grateful my folks let me stay with them for so long. They charged me rent and internet, but nothing close to what my own place would cost.