The best game I never played

Geek books are like crack. I see them. I want them. I do morally repulsive things to get them. Then, after I have them, and the euphoric buzz has faded, I feel a little guilty and maybe regret the purchase.
I can normally rationalise the purchase away though...
It's well written, so it's like buying a regular book
It's a good system that's got me thinking, so it's a mental exercise, which is good
Oh, I will use it, it's fucking awesome

Then, months or years later you look at your book shelf and realise that the literally hundreds of pounds you've spent could have gone on something more worthwhile, because you've never used the damn things.

Example
When my wife moved in, I showed willing and cleared out a load of my old RPG books. I sold off about 30 Mage: The Ascension books that I had never used.
I gave away about 15 Exalted books, 6 Orpheus books, 20+ Vampire: The Masquerade books, 1 Mummy: The Resurrection book, 20+ Ars Magica books and 4 Hunter: The Reckoning books that I had never used.

One of the rationalisations i used was that I was clearing house of everything I didn't use and was never going to use again.
I would start again.
Rebuild.

As of now, I have 22 New World of Darkness books, including core rule books, most of which I have never used. I've not used Mage, Vampire, Changeling and a number of supplements.
I have Ars Magica 5th Edition, which I have never used.
I have Exalted 2nd Edition, which i have never used.
I have Trail of Cthulhu, Fear Itself and Star Wars Saga Edition. I've not used any of them.

This is kind of depressing. A lot of these are great games (the exceptions being ArM5 and Exalted 2, which appear to piss all over the previous, stronger, editions).

Unfortunately i don't see an opportunity in the near future for play either, which is a real shame.

I'd really love to do something with Changeling: The Lost, which is a really rich game chock full of opportunities and creativity.
I have about three or four Star Wars games I could run, and could pull off a respectable Vampire: The Requiem game.
I think i'd prefer to play Mage instead of run it.

Now, if only my children would age about 5 years, i'd have a bit more time...