Yea. I do WQs to get my emissary quest done then don't do any others unless it is gear upgrade or herbalism, so I actually dont have many resources.There's no reason not too though as it really isn't that expensive and if you are doing your world quests you will have plenty of resources. I have upgraded all of the non 840 pieces to 840 and started my 4th OH upgrade and still have 25k resources.
Rather run mythics and to get 840+gear in all slots and relics