Why would I change either?
I mean, I’m a hoopy frood, So I know where my towel is, and it’s full of all kinds of nutrients due to the competing microbes that compose its flora. You don’t just waste that kind of ecosystem by changing towels every decade.
And sheets? What about the memories? Every stain is a mark of something wonderful that happened. Except the ones that are marks of something horrific that happened. Or the ones that are just spilled beverages. But, you know, that’s still plenty of good memories you want washed down the drain, you animal you.
Yeah, but at 50 you become an antique, which means people want you just as beat up and scarred as you happen to be, but they’ll pay less for you depending on how much scarring and beating you have.