Is it not a tactile thing, a heavy metal mechanical....thing of substance and no small amount of beauty.
I used to have a big copal shutter, just shutter no lens, I loved the feel of the thing, it was no tool because I never used it for anything other than to hold it, set it, trip the shutter, it was like some Victorian medical instrument, all chrome and brass with cogs and springs, clicks and whirrrs, I dunno why that is so attractive........mebbe its a bloke thing.
My Mamiya 6 is a tool, substantial as it is it just doesn't push the same buttons.
I have had some cameras the do though, Nikon FM2, Nikon F3, Canon A1......yeah a Canon, it developed a squeak though and if I'm honest, it didn't take much getting rid of, the Nikons however did.
Why thell didn't Nikon make any M/F cameras.....its an imponderable, the only reason I still don't have them is because they were 35mm, you wanna use them but if they don't produce what you want, you might as well get a big copal shutter.....