I don't appreciate the natural resolution of my XPS 15's 4k screen because my typical use case is to use an external screen. For that use case, the laptop's own screen is totally irrelevant.

Without an external screen, 4k resolution makes everything too small. But setting scaling on the laptop's screen interacts badly with the external screen, which I use almost all the time and do want at 4k. So I end up with the laptop being that much less usable when I'm using it by itself.