Playing music. Started on a shitty hand-me-down acoustic guitar. Got a better guitar. Got an electric. Got a better amp. Got a couple of pedals. Got a better amp. Got like 6 more amps, some cabs, 5 more guitars, a huge pedalboard, a cello, a keyboard, an audio interface, attenuators, mics, etc etc.

You gotta understand... I need all this stuff. There are subtle differences that you've never noticed before but will probably hear once I do an a/b comparison for you, and I absolutely must get an AC15 next to round out the collection instead of buckling down and recording something.