There is no doubt that a weapon places power upon the user’s hands. It gives a huge advantage in the damage the user can inflict vs. being unarmed. However there is one fatal flaw with weapons, and that is they can be turned against the user.
This can happen through a variety of ways, but it often happens when another person is in grappling range. A weapon does not give someone more physical strength, and a large problem arises when a person uses physical force to attempt to snatch the weapon. The power is transferred to the other person as soon as they obtain the object.