To me, still pretty insane...
For me, I have two baskets in my bedroom. Darks/colours go in one, whites/lights go in the other. When they get 1/2 to 3/4 full, I do a load of wash.
Those baskets include bras, all my jeans, shirts, work clothes, workout clothes, bathroom towels (well, from the master bath - the spare bath/kitchen towels/rags get tossed on the laundry room floor to get added into the next appropriately coloured load). I do about 2-3 loads a week.
Albeit, that is just for me. When DH is home, he goes through three outfits a day - morning workout clothes (PT uniform), duty day outfit (ACU's), and evening wear (jeans/shorts and t-shirt). Some of it he will wear more than one day, depending on what he did while in them. (ie: PT uniforms never get worn twice, but the ACU's are kinda outerwear, and DH usually sits in an office for work, so they usually get worn twice or even occassionally three days... it's DH's call on how often those need washing)
Having DH around adds in about one or two more loads per week - one load of ACU/tan/green, and sometimes a second darks/colours load. (DH doesn't wear much in the way of light colours) It never adds less than one more load, because I refuse to wash his ACU's with any of my clothes. They have a bunch of velcro on them, and the velcro has torn up a couple of my shirts...
So, that puts us having about 3-5 loads of wash per week. Generally, it trends toward the lower end of that range.
I think we just go through less clothes/sheets. I only change the sheets once a week, and same with the towels. (unless something warrants changing them more often, such as extra showers, a/c not working in warmer months, etc...)