Going as far back as Kurosawa’s 1961 classic Yojimbo (and probably even before that), the revenge flick always has a unique place in the heart of the audience.
Whether it be a samurai, a war vet (ala Rambo), a 21st century Liam Neeson role, or (most recently) the John Wick films, we all have that inner being that wants to exact revenge. Whether it be a bully, a boss/co-worker, or someone who cut you off in traffic, our (much safer) alternative to vengeance is watching it dished out on screen.
Nothing else to say 