While some people may start out knowing exactly what they want to photograph, some of us may take a more meandering path and end up somewhere that we completely didn't expect. I think too, that people's interests change over time, and as they change, their gear will change as well. I really got into photography because I wanted to document my car and car culture, went through the "85mm f/1.2 bokeh!!!!" phase, did some wedding/portrait work for a bit, got into macro for a while, and here I am today head-over-heels in love with bird photography. Weird. 12 years ago, had you shown young me where I am now, I'd have had a great laugh
I'm happier with less now because I know exactly what I want to photograph, but more importantly, what I don't. This took a decade+ and a good amount of GAS to figure out, but I am confidant now that I'd be completely happy for the foreseeable future with just my Fuji X100V and Nikon D500 + 500 PF... 23mm and 500mm, and nothing in between, because I figured out through trial and error that's what I need to get the shots I want.
What I've discovered over this past year is a satisfying clarity of thought and intention once the gear became secondary to the actual process of photography. The journey up to this point has been me figuring that all out, and this is where I'd always hopefully end up. Similar to what Tom posted, now instead of worrying about the next big lens and camera release, I agonize over the next time I'll be able to get out and photograph birds. I check weather forecasts and eBird reports way more frequently than Canon Rumors and Canon Price Watch. My YouTube time is spent absorbing field craft and technique, versus gear reviews.
It'll be interesting to see where I am in another 10 years from now!