Cameras owned:
Before 1979, 0.
From 1979 - 1997: 1.
From 1997 to present, increasing exponentially, it seems, so that I now have 27.
Seven cameras purchased new (two film and five digital), one film camera that was given to me, 18 film cameras purchased used, and the digital camera in my cell phone.
The break-down is this:
11 ea. 35mm SLR
1 ea. crop-frame DSLR
2 ea. full-frame DSLR
4 ea. 35mm Film Rangefinder
1 ea. 35mm Film Point and Shoot
2 ea. Digital Point and Shoot
5 ea. Medium Format TLR
1 ea. Cell phone POS
All of the cameras that I purchased new work fine, and I use all of them, though not every one every month.
The camera that was given to me is in pieces on the dining room table (and has been for awhile). It may get sent away to a home for aged cameras as a basket case - I haven't decided its fate yet. I did put two or three rolls of film through it before taking it apart.
Of the 18 that I purchased used, only 6 were fully functional with no need for anything immediately. I have used all of those. Two of the cameras are maybe beyond hope - they cannot be used in their current condition but they are really nice cameras (Rolleiflex 3.5A, OM-2n) so I'm hoping they can be restored. The ones that need service are lined up and ready to go out - most of them were purchased within the past year.
So, I have 16 fully functional cameras, and use them all, though some more than others.
My goal is to master each camera, but I'll have to get busier than I have been. I did process some black and white film the other day like there was nothing to it, though, and it wasn't all that long ago that I processed my first roll ever. So, there's hope.