Too many, ha! I am a bit of a hoarder and I don't like giving up gear.
The stable includes...
Z9 - primary camera
Zfc - my fun camera for just walking around or tossing in the car
Z6II - bought used as backup for the Z9 until something akin to the D850 shows up in Z
D850 - never giving this one up, even though it mostly just serves as a film digitizer these days
D200 - keeping this mostly for sentimental value now. I shot this camera for over ten years and took it all over the place. When I got better gear, I had sent it off for IR conversion, but it got lost in the mail for months. By the time it finally showed back up, I had picked up a used D800 for IR instead. Keeping this one anyway, because it means a lot to me.
D800 - IR converted
F100 - For shooting film and being serious about it
FM - For shooting film and indulging in fully manual nostalgia
Only bodies I've ever actually given up were my D70s (my first DSLR, which I gave to a friend who wanted to learn photography last year) and my D500 (which I sold to help pay for the Z9). I'll probably sell the Z6II, though, when the mythical Z8 shows up. I don't care for its control layout and I'm just using it as an emergency backup.
Edit: Almost forgot... an old Minolta film body from before I started shooting Nikon. Also kept purely for nostalgia, even though I never shoot it now.