Kodachrome is hard film to use; I gave up trying to take indoor photos with it years ago. I have continued to use it (about 25 rolls in the last two years), mostly because the quality of the images is obviously different from modern film or digital, and evokes nostalgia in older viewers. And I liked the bragging rights. It's no surprise that Kodachrome is gone; Kodak had been phasing it out for years -- first killing the larger format versions, then the iso25 and iso200 variants, and the motion picture film. The economics just weren't there; virtually every other color film uses identical (C41 or E6) processing chemicals, and Kodachrome used a different and apparently more toxic set. Without scale, it was more expensive to buy and process than other color films, and the emulsion can't even be scanned by most slide scanners. You're left with only nostalgia and archival properties to drive sales, enough for a small specialty chemical company perhaps, but not for Kodak.