20 years young

So I turned 20 on Sunday, and my dad called me up in the morning and asked me how I felt now that I'm not a teenager any more. Actually, I hadn't realised it before, but it's quite scary to think that I'm now heading for 30, and true adulthood. I don't want to have to grow up and stop putting pink and purple in my hair, stop getting piercings and tattoos because they're cool, I don't want to have to give up going to house parties and getting trashed or having my good friends over and kicking ass at Mortal Kombat. It seems like people expect you to be serious and sensible when you get past your teenage years, like they did before us. But that seems so cliche and boring to me! I want to feel alive and young, even when I'm not that young any more. What's the point of living if you only do what you're expected to do, and not what you want to?