Not much worse than me, to be honest. I'm steadily reducing, but still have almost all my OO-Gauge stuff (unused for years), several back years of magazines and quite a lot of other stuff. Still, I'm quite happy living surrounded by things, and can't imagine not having loads of clutter to hand. I'm certainly never short of something to read.
I know a compulsive hoarder very well, and no I'm not sure I understand how they live with such a large amount of clutter, but then I've got too much stuff that's for sure, and I do wonder if one day I'll reach that level..