Growing up sometimes means some really unpleasant things. It means paying taxes to register your vehicle. It means working full-time. It means big decisions. It means responsibilities. It means grappling with the exceptionally frustration experience of, to steal a phrase, finding someone interesting who's interested. It can really be a whole string of yuckiness.
But, it also means that you can eat McDonalds whenever you want and you can buy yourself Super Mario Galaxy 2 at the drop of a hat. These don't necessarily make up for the rest, but they sure don't hurt, either.