My first camera (which I still have) was an Instamatic 400. I always enjoyed the 126 format. Over the years I acquired a nice collection of cameras, ranging from cheap Instamatic box-type cameras to precision 126's like the Rollei SL26, Konica 261, and Instamatic Reflex.
Despite a large stock of film in the freezer, I rarely shoot 126 anymore. It is just too difficult (and expensive) to get it processed.
I do shoot it occasionally, and it does take a little explaining to get a lab to process it. The drugstore labs don't know what it is and the pro labs think you are insane (which may be so in my case). But I still can't resist the occasional roll, if only to be able to use my Rollei A26, or, even better, my Instamatic 104 in a dive housing.
I was able to get some Verichrome Pan from another apugger for my Rollei A26 and I shoot the occasional roll with it, but I find the inability to control my exposure a bit difficult to deal with, given the age of the film (fog.) I crack open the film canister and process the B&W myself and a local lab is happy to do the C41 stuff for me if I bring it in. He even saved the undamaged film pack in case I wanted to try re-rolling some more modern film.