I find that the fantasy of owning every guitar I've ever longed for is kept at bay by the reality of having very little spare money. I've got 13 or so Ibanez guitars and a handful of others. 8 or 9 amps, a hotel fridge-sized rack full of stuff I don't really use, a large shoe box full of pedals, and more cables than I know what to do with. I'm a touring musician, I have endorsements and am pretty well taken care of in the gear department, yet I still check eBay EVERY DAY when I'm home.
I'm constantly hunting for older Ibanez guitars, Ibanez bodies, Ibanez necks, obnoxious hi-gain amp heads, less popular shred-era guitars (hamer californians + diablos, robin medleys, etc), rack stuff, speaker cabs, LP's with factory Floyd's, anything Todd Langner or Lee Jackson ever touched, etc. Practically anything that was for sale in the late 80's and very early 90's is on my mental shopping list. I'm sure one day i'll end up building a garage out of ADA MP-1's and you'll have to stomp just the right presets on the Bradshaw floorboard to gain entry.
At the end of the day, there are lots of things I want that I simply can't afford to buy and that, friends, is how I deal (or don't deal haha) with G.A.S.: poverty.
That being said, if I were to all of a sudden hit the lottery or win a big poker tournament, you can bet your life that I'd have a room where one wall was made out of Metaltronix stacks.