Well, the modular part is not really the electronic part. Interchangeable lenses go back to before the days of Ansel Adams.
DSLR bodies go through a release cycle that is not much longer than major phone models, these days.
DSLR bodies go through a release cycle that is not much longer than major phone models, these days.
One reason to put up with this crap is that you can save thousands of dollars buying nice old glass for your nice new camera. But even though the glass lasts forever, once you get 50MP sensors in cameras, old glass that was designed for the best resolution of 35mm film will limit the performance of a 50MP+ image sensor. Soon, photography will be mostly computational, and big old lenses will all be museum pieces.
I don't even want to think about whether I've kept the firmware on my Sony E-mount lenses up to date.