Why does this game get worse the longer you play it? I swear to god every random mob has obscene levels of HP no matter my level or gear.
>Solo questing TWW as a holy priest (I enjoy healing in dungeons and raids)
>Enemies take around two minutes to kill
>Switch to Shadow Priest
>Enemies take two minutes to kill but now I can't heal myself

Is there some obvious piece of the game I'm missing? Or am I just fucking gimped because I picked priest?
I'm 72 with an ilvl of 424 and every combat encounter in the first TWW area is a slog.
Shit I can't even heal in dungeons anymore and for some reason barely give any health to the tanks.
I swear this game was more fun level 10-20