As a landlord, I have seen it all. In regard to laundry, here are a couple of extreme examples I have witnessed:
A man wore the same shirt and pants everyday, for years. One day when he had to move-out to go to a nursing home, he left some furniture and clothes in his unit. When I opened the closet, I couldn't believe it. Inside were over a hundred suits, nice shirts, pants, and other clothes. Some were still in their original plastic packing. Yet he wore the same dirty shirt and pants everyday for years.
The other extreme:
This couple with no kids called me that their dryer was broken. It was Sunday afternoon, so I couldn't get an appliance company out to deliver a new one until the next day, about 24 hours later. This couple showed me their laundry pile. It was about 4 feet high. I said, "all of that is just from one day without a dryer?" They replied in the affirmative. Apparently they shower about 3 times a day, each use clean towels after each wash, change their clothes more than once a day and wash after each time.
I wanted to say that there has got to be a 'middle way' but kept silent.