Ok, I guess I was a different kind of teenager.
My vacations always consisted of me, my mom, and my grandparents (who we lived with). I never went off on my own away from them on vacation, including the one time I took a friend (graduation gift). I loved my family and cherished the time I spent with them.
As an adult (I'm 28), I look back on all those trips, which included WDW many times, and think about what great times they were and how glad I am I spent my time with them. I can't imagine looking back thinking, "I slept the morning away then went off with a friend, then hooked up with the folks for dinner that night. Good times."
It makes me sad to see more and more families handling trips like this.