better the devil you know than the one you don't know

better the devil you know than the one you don't know

When faced with two options, it is better to choose the more familiar one, even if it is undesirable. A: "Why don't you just quit your job if you're so miserable?" B: "Who knows if a new job will be any better! Better the devil you know than the one you don't know."
See also: better, devil, know, one