Nah, don't feel weird about. I think adulthood doesn't really
  start to "kick in" 'til you're around 25. Something about the
  brain finishing up something. That's when you start to _really_
  stop and consider your actions, and in a different way than you
  did before. I remember when it 'clicked in'. Strange stuff. Then
  around 28, I got called "Sir" and "Mister" and"Mister Udut" for
  the first time. That was like, *sigh* - guess I'm adult now...
  even though I'd already been wearing a suit and pretending.
  Wasn't 'til then that I was like, "Yup, made it I guess"