D.P.
We have 3 people.My husband has a job where he requires separate "work clothes" so he wears 2 outfits per day (sometimes he wears non-work clothes 2 days, then the occasional sweatshirt, etc. I wear 1 outfit per day.
Son wears O. plus a baseball uniform 2-3 times per week.
I could easily do a load per day. Then there are sheets, rags, rugs, etc....
I really do think it's better (like flylady rec's) to do O. load per day, "re-boot" the laundry first thing in the a.m. Then you don't get the dreaded "mountain" of laundry.