Would just like everyone to know that from a (positive) utilitarian perspective (my own (and many other intellectuals')) that it was wrong of The Grinch to return those Christmas presents. - eviltoast

The Whos down in Whoville seemingly lost little to no utility from losing those presents and in fact seemed unaffected at all while The Grinch over the course of cartoon (and seemingly the source manga from what I recall) seems to benefit immensely and derive great utility from the act of stealing said presents, as well as presumably using them afterwards.