I'll be sticking with Lightroom 6 (non-subscription) and the old cameras it supports, until the sad but inevitable day I can no longer run it.

I don't find editing takes much time, because I now have so many custom presets I can apply on import or in bulk that do 90% of the work.

What does take ages is picking out the best shots, but really the only way to make that quicker is to take fewer photos. Which I suppose shooting film actually does force you to do. (But so would a 2GB SD card.)