This post is about you and the singular they.
"Bob is impressive because they is an excellent doctor." If that ruffles your feathers, watch this brief presentation by John E. McIntyre. And while you are at it, check out this fascinating Khan Academy video detailing the history of "you."

maximize your cleanliness, it is much more profitable to seek out Training for your Immune System, and optimize your life so that things get cleaned the minimum amount that allows you to maintain a functional and prosperous household. The reward is thousands of dollars and countless hours saved, and if you’re lucky, dozens of illnesses prevented.
By all means, keep things happily minimalist, decluttered, and organized – a simplified physical environment is good for the mind. You can also wash your hands with normal soap after a big day out and cook your food properly. But in your own home where no babies are delivered and no surgeries performed, you can safely let yourself off the hook when it comes to wiping, sterilizing, washing, drying, and polishing.