Originally Posted by
JackalopeSpam
Knights typically use swords, maces, and polearms (spears/lances) in a lot of lore circumstances. The axe is a bit of a stretch for a good knight as it is more of a cruel weapon, which is fine for a Death Knight. Therefore Paladins and Death Knights get these basic weapons.
As for fist weapons, these are typically a bit more barbaric or stealthy. This goes directly against the idea of any sort knightly code or the like. So no fist weapons for DK's.
There are many classes who can not use every weapon. In fact, there is no class that can use every weapon. The closest is the Warrior, but they can not use wands. Most of the casting classes then have either swords or maces, but not both. Melee classes tend to have a lot of choices, but typically miss out on 1 or 2 types.
It's already nonsensical that death knights can Dual Wield, throughout lore they typically had 1 two-handed weapon, and it was evil.