I'm just a hobbyist, and for some of us, part of the hobby is experimenting with gear, which implies GAS. But I had a plan to own three complementary basses -- fretted P, fretted J, fretless J -- and a decent combo amp and some decent recording equipment. With the recent completion of a Warmoth fretted P build, I thought I had achieved that and was pretty happy, with the only possible remaining need being a lighter, thinner neck for the Warmoth. Pretty darned content overall, though.
And then my son, who recently ran into some money, decides that he wants to be give me a Fender Modern Player Telecaster Bass for my birthday. Basically because he likes big humbuckers and thinks I should have some too. I don't have it yet because he's fixing a couple of things with it first, but it looks like I'm about to have MORE than I wanted or needed. Not exactly a state I ever expected to be in. Of course, I'm sure my wants/needs will adapt to the new situation quickly.