It should give it to players who play alone to make a farmer to be able to sell the resources to cities that have difficulties. imagine a player with land to farm and be able to go to the city to sell his wagon goods. Being robbed on the way, etc.
[these resources should also be necessary for the creation of Potions (HP, MP, Stamina, Damage, defense, etc.)]
an idea (profession farmer) would be a way of doing business
(Blacksmith) can craft better weapons with more damage or defense
@David353 for what I understand, since almost every single game has a profession system like the one you're proposint, the fact that Fractured has not is not because they didn't think about it, it really looks intentional to remove the focus from the grinding part of crafting mechanics you see elsewhere.