We are descendents of people who bathed once a week (or less often) sometimes using the same tub of water for a large family.
I’m happy to live in an age where I can bathe daily if I choose to (and I do!), but obviously if you look at the generations before us you’ll see that it’s not deadly to walk around filthy and germ covered for a few days.
I once worked in an assisted living facility. Our main clientale were well-off, prissy little ladies in fine clothes & fine jewelry. Some of them were at the point that they need assistance with bathing. You wouldnt beleive the fuss they put up on shower day! We required in our care plans that they bathe a MINIMUM of 3 times a week. They would kick up their heels & squawk the whole time about being washed entirely too much.
And think about this; Before indoor plumbing I’m sure we’re all aware that the outhouse was the place to go. Have you ever heard of an outhouse with a sink??
I would assume that handwashing after bathroom time was very rare then.
I wash my hands MANY times a day because I work in a nursing home where conditions are ripe to spread icky germs, but I don’t stress about germs past that.
So, while I love feeling clean and do my best to stay that way, I do think there is a huge overemphasis on keeping ourselves germ free.