I hear you. I've been toying with the idea of a Pelican case with cutouts for an M61 MD3, M61L MD3, M61LL MD2, etc., each with alternate heads next to it for N and W tints.
Because it's fun having a variety and nice to know you could break a few (if you ever could) and still have a few more.
But I also find satisfaction in using just one light for almost everything, not because it's the best one for each task specifically but it's the one that's there and it's good enough. You can rely on it to do the same thing every time. It becomes a companion. Rather than pulling out a handful of different tools all the time, you learn how to use the one tool a handful of different ways.
For me, it's hard to only own a single one, but even if I had all the lights on my wishlist I'd still probably end up with the same one in my pocket all the time. It's funny, though, that when I start a thread deciding between CW and N M61s, I end up wanting a W as well!