Oh yeah, for sure. But experiencing nostalgia doesn't necessarily mean you're seeing the past through the proverbial rose-colored glasses. I'd like to think I'm fully aware of how shit things were in the past too, but it doesn't change that fact that there were some beautiful points, some sometimes painful but meaningful experiences, and there's nothing wrong with looking back wistfully at them, recognizing them for what they were. And as you get older, there are bound to be more of those moments collected. I totally agree about not getting stuck there, though... getting lost in a past that is gone and never coming back, and crippling yourself from being able to live in the present is just pain and calcification. The happiest older people I know (and the few friends I have irl are mostly elderly) are the ones who can look back and recall with joy their past and share that joy with the people around them in their present.