I don't mean to be the party pooper here, but what's wrong with living at home with a warm meal, a cozy bed, a loving family, and freedom?
I'm 20 years old and live at home. I go to college (ugh), have a good job, I invest my money, I'm not in debt, I don't recall the last time I felt my tummy rumble, and I can do whatever the hell I want. I can stay out late, I can leave my house whenever I feel like it, etc. What more "freedom" do you want? The freedom to decide between gas and dinner? Give me a break.
There's nothing wrong with living at home after you've turned 18 unless you're a fucking deadbeat. Deadbeat = don't work, don't go to school, watch TV all day. (I know someone like that - he needs to get his shit together.)
Me? I'm not moving out of my house until I can afford one of my own and have a fiancee/wife to occupy it with me. Otherwise, what's the point? Going from living well, in good company, and in a good financial situation to living alone and flat-ass broke? No thanks.
Matt, being successful? Who is going to be more successful by the age of 25? The person who has so little to worry about in his life that he has the time and money to dedicate to that which will make him successful, or he who has to skip meals in order to pay the rent?
But I guess it just depends on your parents...
-Warik