Joey Tribbiani: It's just... you know, they're parents. After a certain point, you gotta let go. Even if you know better... You gotta let them make their own mistakes.

Rachel Green: And think, in a couple of years, we'll turn into them.

Chandler Bing: Oh, please. If I turn into my parents, I'll be an alcoholic blond chasing after twenty-year-old boys... or I'll end up like my mom!