I actually bought a license a lot of years ago because I had been using it for many more years already, always clicking that nag screen away, and some day I realized that I would be totally hosed on Windows if there was no WinRAR because it really is the only compression tool that packs good format support with a bearable user interface.
7-zip is okay on the format side since they added some of the newer high-efficiency compression algos, but the UI still sucks compared to WinRAR.
Sure. Replacing single files deep down in some directory hierarchy in an archive. Compressing bigger amounts of files as efficient and fast as possible, so I want to customize a lot of parameters of the algorithm. Extracting many archives into separate or a common directory. Verifying archive integrity because something seems to be damaged. Encrypting stuff when compressing.
I like to use a good UI for that stuff when I'm on a graphical system like Windows anyway, and WinRAR is consistently better at that than 7-Zip.
I even seriously miss WinRAR when working on MacOS. Does anybody have any good suggestions for archive managers (may also be expensive ones, I don't care much if they are really good) with similar UI and functionality as WinRAR on MacOS?