I use Plex. It virtually exclusively contains rips of blu-rays and DVDs that I have bought. I do not consider this piracy. I do not think format shifting is unethical. I do think DRM is unethical.
Listen here, just because you bought a piece of plastic doesn't mean you own what's on the piece of plastic. It's like a car, just because you bought a car doesn't mean you own the steering wheel it the seats.... Oh wait.../s