Translation: today we wash in the house where we also crap.
We eat in a kitchen that is shiny (but has gunk in the cracks). We pull our food out of the refrigerator where the hamburger we cooked last night leaked. And if you're so clean, what's wrong with wearing your clothes another day?
Reality: Most people have something growing in their refrigerator.
They keep a cat who also craps in the house albeit in a box (all the family cats lived in the barn). Every time you flush a toilet, you create an aerosol containing wee bits of what you flushed.
My great grandmother had running water and septic, we washed daily, just not as conveniently. The icebox worked fine until the refrigerator came along, and the food was fresh from the garden, eggs straight from the henhouse, fish from the river.
We cleaned or butchered or canned our own, smoked the meat when appropriate and knew what we had.
It didn't kill any of us, and the average age of my grandparents when they left this mortal coil was 89 1/2 years old. My parents are still alive. After my great uncle died of an infection at the ripe old age of 10, (I'm a great grandpa now), the family was fastidious about cleanliness.
No one who has grown up with being able to go to a doctor and get some pills and be cured will have the same sense of what ordinary pathogens can do.
YMMV
Oh boy, you are one of those.
To avoid admitting your mistake you will claim the outhouse is more hygienic, the old ice box with it's wet interior and wildly fluctuating temperatures, and a 1900 kitchen that was impossible to keep clean are all superior to a modern kitchen and refrigerator and indoor plumbing.
After all that, you seemed to drift off into some personal reminiscing about your own personal life a 100 years ago.