I had just one for about 7 or 8 years.........then I ended up buying 2 from a member here when I was back in San Francisco on vacation about 3 years ago........
my M6ttl was my first Leica and it is my most used.....the m2 is a user and it gets used a lot as a back up, I love that camera.....my m3 is more of a "specialty" camera in the sense that I'll take it out with a 50mm or a 90mm all day and see what I can get......it gets its use, but not as much as the M6ttl and the M2.......
to be honest, I never would of thought that I would own 3 Leica m bodies....but over the last 3 years, I have been lucky enough to have been able to purchase "back-ups" in case something goes wrong with one of my cameras while I am out shooting.......I don't need anther one and to be honest, 3 is a little excessive for me, but the M3 is in such nice condition, that I can't bring myself to sell it....
cheers, michael