HAE overstayed their welcome at pediatric doctors' offices?

I'm 20 and a sophomore in college, and today just got back from my appointment at the pediatric dentist, at which I was reminded that I was their oldest patient. I have six younger siblings, so as of yet I haven't had to make the switch to adult doctors or dentists yet, as it makes it easier if I can just drive my siblings to the same appointment. There are pluses (no prostate exams) and minuses (Disney Channel), but overall it's just been getting more and more awkward and I'm thinking of making the switch. Any other "adults" still sitting at the medical kid's table? Do you want out as well, or do you prefer the pediatric system? If you stayed as long as I did and already switched, when and why?