Except when you realize that you will grow up...
You mean, "Not wanting to grow up and so savoring every minute of your childhood instead of rushing to be an adult and later in life looking back and realizing you missed out is the best thing ever"?
You've obviously never had sex.
Yeah, but there's a difference between never moving out/never getting a job/never having responsibilities and wanting to not lose time to have fun/relax/not get stressed out through work etc.
It actually sucks cause no matter how much you want it, you can't stop time so..