"I truly feel sorry for people who felt like their best years were in high school - and they stay there."
Me, too! It's so sad to me that people think their lives were basically over when they were 18.
Although, I will say that the women who think of their wedding day as their "glory day" scare the living snot out of me - they're the ones who are always going on about "at my wedding five years ago..." and use their wedding pictures (months, years, DECADES, even) later on to illustrate a point (e.g., "see, at my wedding, we did such-and-such with the flowers"). *That* was the only good day in your life?!?