I've used the iiif for a few years, and I recently picked up an M2. No other cameras have felt as good in my hands as the Leicas; it's really that simple...haptic joy!
I also enjoy using manual dials, knobs, rings, and other things; something that I discovered while still using a DSLR (I started this hobby using digital).
If we are going to resort to car analogies, I would compare using any mechanical camera (not just Leica) more with choosing manual transmission over automatic. In this sense, it doesn't seem that dramatic or peculiar.
But if my approach still appears anachronistic to others, that's fine. It's a hobby, and if I derive so much as a degree of some tactile pleasure from using the film advance lever, then so be it.
Oddly enough, people still use pianos, pens, paintbrushes, and their very hands instead of computers and their various modes of output, including 3D printing.
Also, as simple as an iPhone is, it is, FOR ME, an ergonomically atrocious device with which to take photos.