Melee = Stunlocked when attacking

Why can't Melee move when attacking? They are already in the most danger of any class in the game.

Yet, for some reason, my Sorc or Ranger get to freely move and kite while unloading their damage.

But my pathetic little twinkle toes warrior is forced to stand still for 2.3 seconds any time he wants to swing his hammer/

Who tf thought that shit up?