Yeah, I collected a TON of stuff throughout my life; comics, music, movies, games, even guitars.
I've since stopped "collecting", only buying the occasional thing I really want - seriously, about 1% of what I used to buy.
The challenge now is parring down what I have. I have whittled down some stuff, but I need to get rid of more. Everything is neat and organized, but I feel it's just too much - a nice, small tight collection of stuff, be it music, movies, books, can be kinda cool - but it's all about controlling your habits and not just moderation, but near minimalism.