NFL

It's way more freaking fun to be an early-20-something having all the independence (and some cash in your pocket if you're lucky) and none of the responsibilities that come later in life. Living with your parents is limiting even if they give you total independence. It's also great experience in taking care of yourself and your own place that will help you down the line.

Of course, there are reasons why living with your parents is better than living alone, too.