I was looking through some questions and found [this](https://rpg.stackexchange.com/questions/117111/can-the-spell-catnap-affect-elves) question about the [*catnap*](https://www.dndbeyond.com/spells/catnap) spell (XGtE, p. 151).

In what scenario might this spell be useful, considering that the spell says willing creatures?

The only thing I can see is that you may use it on a class that restores some stuff on a short rest if you don't have that much time for a short rest (short rest being 1 hour, catnap being 10 min).