I've got everything I need with only 3 electric guitars. For vintage and heavy tones, the SC58 is perfect; my more typical rock tones and trem needs are covered by the Artist V; and everything else is nicely done by a Sig with 408s. In fact, with even this few, I sometimes feel a tinge of paralysis by analysis, and can't decide which one to use for a part.
Of course, I do have Gear Admiration Syndrome (different kinda gas?); some of the stuff that people post up here is killer to look at, and the new PRS models make me drool sometimes. Like Paul's guitar. Awesome.
As for amps, the HX/DA is my soul mate.
But right now, I think everything's under control. Everything has a useful purpose in my work, and I don't feel any sense of urgency to make changes. It's a good feeling - it's called satisfaction!