Obviously most office workers or casual users don't need that much memory, but I've hit swap before w/ 32GB of RAM just with browser tabs and electron apps, so I bet lots of people with 8GB or 16GB hit swap and get slowdowns and just assume their computers are too slow, when really, more memory would have solved their problems. Also, I'm also sitting at 36GB of wired memory usage right now with a single VM running. Anyone running containers or doing any virtualization will want as much memory as they can get, as would anyone working with any number of data sets - I've hit swap on 64GB working w/ "simple" sqlite databases and doing basic pandas work. I also do video and photo processing (including a lot of large panoramas) for fun on the road and that's another whole class of workloads where more memory is better. As mentioned by others, large compiles also benefit from more memory.
Anywhere, here's the rub. I bought my 64GB memory kit for $250. It cost an extra $125 at retail to add an extra 32GB of memory, which almost all laptop manufacturers have decided not to even allow as an option for segmentation/planned obsolescence purposes. Which is fine, that's their prerogative, but since there are enough decent options that allow more memory, it also means that I, or anyone else who needs more RAM just won't be giving them any money instead.
