How old is too old to live at home?

I’m a college student working at a minimum wage job and living at home. I was fine with the idea of living at home when I first began college, but now as I’m about to turn 20 and begin my junior year, I feel like a loser. My studies make it unable for me to find a full time job, so I have no money to move out. I mean, don’t get me wrong, having dinner cooked when I get home early is GREAT! But not being able to have people over, or having my mom call and ask where I am and if I’m going to be home late, is getting very old, very quickly.