Why equipment does not use durability?
Durability slows down the gameplay, in order to keep it streamlined and avoid traveling back and forth to blacksmiths we removed it.
That's one way to look at it. Durability is about making choices. If it is a skill it is a choice to take it or not. If not then you have to take care of what weapons you use. I would consider it to be an addition to gameplay.
