My grandfather had a Kodak Retina, when I thought of rangefinders, focusing ..., it was something old people used to make pictures, lol. I started photography with a Canon A-1 in the late 80's, and came back to photography when I moved to Northern California in the mid 90's. I started working for Oracle, as a software engineer, and ever since then I have had an aversion to digital cameras. When I saw someone carrying around a Leica M4-P. I loved it, no battery, a solid tool, that had no dependencies, and a slim size, that felt in my hand, like something magical. Then the lenses, a Summicron 50, wow, images became less snapshot like, and started to become poetic.
I bought one from KEH. Since then, my love for rangefinders have grown, I love my Mamiya 6, and my Polaroid 600 SE, now a Mamiya TLR C220. Something about focusing a rangefinder, ... getting the 'ghost' to sit directly on top of the image, magic, and the images, from my M4-P, always happy- dropping them off at a processor, and getting them back in a day or 2, scanned TIFF onto a DVD, it's like Christmas each time. I got caught up in the Lumix G1, it's fun, but its not the same, I go back to my M4-P, and never have to recharge it or play with the myriad of menus.
Solid.
Simple.
Standalone.
Scales, haha - (software terms.)
Like Awk, Sed, or the Bourne shell, the UNIX operating system. Very simple, but in the hands of a knowledgeable person, wonderful things can be produced.
It's from another era, it was when Leica was teetering on the verge of collapse ...but still just hanging on, yet able to put out another masterpiece. I like it when something like that happens, just when you think it's almost over, a miracle, like the resurgence of Apple computers in the mid 90's.
It's just my favorite camera.