Simply because it has the best coat of arms ever: an eagle devouring a snake while standing on top of a cactus, based on the Aztec symbol of Tenochtitlán. It goes soo harddd
Also has the best green and red shades, period.
I love this -- it sounds good in Spanish ("cuidate") too.
Maybe it's just age, but I've become fond of telling people to "be good."
It's intentionally vague -- it could just be a grammatically poor version of "be well"
Or it could be a suggestion to behave yourself (ish).
It doesn't explain itself and that's my favorite part.
