Because the combat just feels like a worse version of Assassin's Creed, which is saying something, and it just never feels good on its own for me. I've gotten accustom to a LOT of different melee combat systems in games and this is one of the few that even after dozens of hours it still feels clunky.
Single combat is OK, but group combat is just miserable in 3 with you either blocking 90% of the fight waiting for the one opportunity to attack when you aren't getting juggled between 5 wolves or drowners. Parrying doesn't feel great either because the animation priority is too strong IMO, and rolling/dodging doesn't feel great either.
Once I started upgrading the magic a bit more the combat got a lot better (the level 2 trap spell helps with group combat, and the mind control one too) but the level 2 spells take a little too long to cast so they aren't very viable once you are in the thick of combat so I end up just spamming the fire blast a lot.