That's bullshit.
That whole "act your age" thing is stupid. It's better to just do whatever the fuck you want at any age.
You seem like you worry about what others think too much. You're too plugged into pop-culture and mainstream fashion and it's controlling your thoughts.
And that's why are where you are, why you ran away...to be a modern day Peter Pan---to not want to accept responsibilities, to do what ever you want with no consequence---you know that certain things are expected of you here, and you didn't want to live up to them...
You better be glad you don't have a kid, or you couldn't "do what you want at any age"
Actually, this is what I think, "I determine WHO and WHAT I am, and I alone must take responsibility for my actions, good or bad"
Now does that seem like someone who is worry about what others thing? Because if I was I was, then I would let others determine what and who I am...