You are not forced to use it . If you want to be competitive sure.
This is the same like:
Ressource in the inventory isn't good at all. Why?
You are forced to use it every time!
If you don't, your opponents will get an advantage.
(Imagine having missing…
(Quote from Mohan_vilaga_HU)
WWK is different with hammer. WWK is at least with artifact and double barrack while hammer is just a strong force only.
I want to say that:
WWK: double barrack, stable + 50% arti
Hammer: double barrack, stable