I'm blessed with the ability to see good photo opportunities. No matter where I am, even in the most familiar of places, I see photo opportunities. When I have a camera with me, sometimes I can make the photo I visualized (if I did my own color printing, my success rate would improve). Also, I realize I can make very decent photos with the simplest equipment.
That said, I know I don't buy cameras to improve my photography. My reasons seem to be a combination of enjoying different cameras for their features, mechanisms, appearance, or viewfinder, and also because of the enjoyment of researching a camera, its place in photographic history, and the anticipation of buying it. After buying my Holy Grail SRT-101, I don't lust after a particular camera anymore - especially as I have so many top 35mm and medium format cameras (Leica, Nikon, Canon, Minolta, Hasselblad, Mamiya, Fuji, Rolleiflex, ...).
What I do wish, which is no longer possible or realistic, is to have a 16mm Bolex Rex with 400' magazines plus a good supply of reversal film. That, and an NBC Television studio camera from the 1960's.