I agree.
Ever since i played the first one (Doom/Quake/Wolfenstein) that everytime i try a new one, it feels like playing the same game all over again, except somehow a bit worse because theres no novelty to the gameplay or it deteriorated into corridors. This is seemingly inexcusable in JRPG's but in FPS's it seems to somehow be alright and everyone gobbles it up.
The only exception for me are games like Fallout, Borderlands or similar wich take a more RPG and open world aproach to the game. The rest... trash i stay away from.