Depends, some movies are so bad that they are enjoyable to watch. Like The Room, Troll 2, most Nicolas Cage movies, most Steven Seagul movies, all Brian Green movies, Samurai Cop, Zardoz, Supergirl, Captain America (first one), Plan 9 from outer space, Birdemic, Battlefield Earth, Cheesy video game adaptations, etc.
And there are terrible movies that are just a pain to watch like all Adam Sandler movies, all Terance Mallick movies, modern spoof movies, Fifty Shades of Grey, Twilight Series, The Hobbit Series, Manos the Hand of Fate, The Purge series and in general the modern horror genre (with a few exzeptions)...