ALL THE MORE REASON TO DO SOMETHING

all the more reason to do something: translation

all the more reason for doing something & all the more reason to do something

with even better reason or cause for doing something. (Can be included in a number of grammatical constructions.) •

Bill: I don't do well in calculus because I don't like the stuff. Father: All the more reason for working harder at it.

•

Bob: I'm tired of painting this fence. It's so old it's rotting! Sally: All the more reason to paint it.