What an interesting post. Thank you.
Because I'm a bit of a technolgoical nonconformist, with an interest in history, I started using RFs in the late 1980s in response to the big clacking auto-exposure motordrive cameras that everyone else was using. I was something of a oddball, the newsroom staff writer who preferred taking his own pictures instead of working with a staff photographer, because I liked having the creative control over the whole package. What started out as a personal challenge -- using old rangefinders to do newspaper work that was indistinguishable from modern SLRs -- turned into a habit and workstyle. At first, it was a way of saying "nyah nyah nyah" to the folks on the photo staff, who I thought were all way too gear obsessed instead of concentrating on the image. I did things like shoot an entire photo spread with a Kiev and 50mm Nikkor, to prove it could be done. Then I just found that I preferred the rangefinders because they fit my working style. In the late 1990s, I started working in news rooms where unions or a union-like atmosphere prevented me from taking many photos. So I pretty much put away the cameras except for family celebrations.
Then, when I did fight my way to be able to do a couple of photo assignments, I found my shooting skills -- my timing and composition -- had grown stale from lack of practice. So, a couple of years ago, to rebuild my photo skills, I started using my RFs again pretty much every week, mainly to take pictures of my kids. It has pleased me very much to be able to combine two great joys of my life ... my daughters and my photography.
I don't experiment much. I like the Nikon RFs because, with a few exceptions, it is a "closed system" -- development stopped 50 years ago. The level of quality, in experienced hands, remains competitive with modern systems. Instead of hungering for the latest lens, I can concentrate on making imges using comfortable, familiar tools. I have lately been filling longtime gaps. I bought a CV 25/4 last year. I've upgraded a couple of chrome lenses -- 28 and 85 -- to black barrel versions.
But for me, the two flagship Nikon RFs, the SP and S3, remain perfect tools for people photography. They have their quirks. But so do all of us.