I wash my sheets once per week. I have two sets of sheets, so that I can remove the 'old' set, vacuum the mattress with the Rainbow (have to drown the dust mites), then remake the bed with the other set of sheets. When one set gets 'worn', I buy a new one. No need for more than two sets at a time (to me anyway). As far as making the bed in the morning, who has time for that? And to me, it's pointless. A waste of time. However, my husband says otherwise, which is why Donnie makes the bed every morning - not me. I always tell him afterwards that he could have actually been doing something useful with his time, like unloading the KitchenAid or walking the border collies. Or dusting.