It's the one thing I (rest of my class too) never really got, it seemed random. I mean I sorta get it today, but yeah.
It's a really, really, really odd thing to openly discuss with others what the bag scene truly means (to me). Lol
Until I was fully content in my life with a wonderful wife and daughter and my stress was limited to only work did my perspective on life and everything around me have a dramatic shift. Basically, the same shift Spacey goes through in the movie. A decompression of sorts. I realized how amazing some of the simple, everyday things in life are.
Quite frankly that shift has a lot to do with me getting out of collecting (for the most part) because I no longer needed the next statue to make myself happy. I still appreciate them, but I don't really want them in my possession anymore. I still have a lot of old stuff, but haven't bought anything new in years.
That shift is also the reason I seldom interact on this board anymore. The negativity was really building and you get to the point you just avoid negativity as much as possible. But you also understand where those generally negative people are in their life. You don't get mad at them anymore, you just hope one day they come out of it.
All of that ^^^ somewhat describes what I mean between always "knowing" what the bag scene meant vs later in life actually feeling the emotion behind it.
Prior to that I would view that scene as pretentious, emotional, hippy crap.
absolutely so. A lot of memorable moments, like the famous 'how do you like them apples?' line. 
