I did have a fair bit of LEGO as a kid, although I never really collected sets in those days. I generally binned the boxes, built the sets, took the models apart and mixed the pieces up with all the other pieces I had. I never really started collecting sets until about 3 years ago, and that was when my problems really started.....
One unifying characteristic of the things I collected in the past was that they didn't take up much space; you can hoard literally thousands of stamps or coins in a drawer somewhere. LEGO is different, however. LEGO comes in big boxes, and consequently, LEGO sets are literally taking over my house. It's like some sort of Danish invasion by stealth. It's just ridiculous. You can't move for LEGO. And the LEGO company don't help either - when you open the boxes, they contain more air than plastic. There's really no need for the boxes to be so big.
My wife maintains that we recently had to move house because of my LEGO. It's an exaggeration, of course - sure, my study was heaving with sets, and there was a fair bit in the loft, plus some sets above the wardrobes in my bedroom and my son's room, plus a couple of sets on display in the lounge, but that's all.... OK, so I suppose that is a fair bit, but at least there wasn't any LEGO in the kitchen or the bathroom. And anyway, she can talk - her shoes were were taking over the bedroom, but that's another story. There's more space now in the new house, but it's just a temporary respite - with all the recent 3 for 2 offers, plus the the UCS Imperial Shuttle, the upcoming Tower Bridge set and other impending sets such as Winter Bakery and the UCS Jedi Starfighter all the extra space will be used up and I'll be back where I started, drowning in LEGO boxes.
So, what to do ? Well, stop buying sets I guess - it's the only solution until I'm rich enough to live in a castle with hundreds of rooms, which will of course happen faster if I stop spending my money on LEGO. Either that, or maybe I could start storing my sets in the unused space inside the boxes of other bigger sets. On reflection, however, I think my preferred option is to just keep letting the LEGO mountain grow until I eventually drown in the stuff - while I'm in no hurry to expire, what a way to go !