Olaf the Stout
Hero
I too used to buy WAY too much rpg material. Then one day decided enough was enough...I never even PLAYED many of these games. So I selected half a dozen systems to keep (at first), then promised myself the only way I would buy more game stuff is from the sale of my OLD game stuff. made life interesting..."Well, if I buy that old Runequest Boxed set, I will probably have to sell off my Buffy and Angel Core Books...". That and trades saw my collection whittle WAY down, so now instead of reading game systems I will never use, I spend that time working on my homebrew world and the various adventures set in it.
Oh, every now and again I will get something as a gift, or find a cheap book at a yard sale / used book store, but these almost always go to trade or auction to support my Runequest / OSR collection. I am now down to three lines (pre-3E D&D & their clones), Mongoose Traveller (2 books) and Runequest items in their various incarnations. And that's all I need.
TGryph
I wish I had the ability to do that. The packrat in me has me hold on to things for a long time 'just in case'. Heck, I keep hold of things like bank statements for several years after the time has passed. I don't need them for tax purposes, and I could get a hold of them again from the bank if I really needed to in the future. Yet I still keep a 'back catalogue' of at least a couple of years of statements.
So if I have trouble getting rid of things like old bank statements and phone bills, how do you think I might go with getting rid of something I actually have for enjoyment purposes, like RPG products? If you guessed 'not very well at all' you are a winner!

Having said that, I still have the money and space for the products so it isn't like I lost my house because I couldn't keep up the payments and I'm living in a car full for RPG products.
Olaf the Stout