I gots nothing against having just one or two guitars, but I will say this: I have 6 Les Pauls and although incredibly similar to one another, each one feels and sounds unique (different size necks, different neck angles, diffferent frets, different pickups, different electronics, different neck woods, etc) and as a result each one inspires me differently, which in turn results in different sounds coming out of each one, which in turn does, frankly, make me a better player. What I mean is, although I prefer the Les Paul form factor to all others and that's all I buy, I still have 6 very different guitars that all do something useful and I could never get this versatility from a single instrument and therefore never discover certain aspects of my playing.