No I'm not a cinephile, I think most of the movies are just utter crap. Is anyone really saying that a poor encode makes a poor movie? Why am I seeing responses formulated this way? It's a bit of misdirection.
I don't like seeing artifacts while watching vids, which become quite obvious and obnoxious even on a big screen. When the encode is done right, you don't think about quality, but if it's done poorly, now you have a reason to think about quality. Let's make it analogous with audio, let's say you have this buzzing sound on an audio track, you can hear everything but that damn sound is just starting to irritate you, well the lower quality encoded videos distract me in the same manner when you say major blocking, weird discolorations, fuzzy edges and general blurriness, among other things.