Harsh to say but WoW is really showing its age. It has to rely on a basic holy trinity system for fights designed in an engine inspired by pc games from the 1990's. They are running out of fun things to do that we havent done before. That and the long time investment for raiding is getting all the more dull personally when im all the more concious that each raid tier is just a stop gap grind for the next save the world raid, and the one after that, and the one after that and so on...
Raidings given me good times but its a dull idea that at this point that requires far more free time investment than anything else in the game and your creative freedom as a player is next to zero because you must adhere to your role and the strat with little to no variance. Thats a bygone system from the 20th century that folks are frankly getting sick of. I know i raid a hell of a lot less purely because its getting old and busted and i know im not the only one.