Wow, a shoes thread so early! I wonder how this one will turn out.
I grew up in a household where it was shoes left on. It was southern California so no snow but at the time--the 1950s and 1960s--no one thought twice about it. Then in my mid-twenties I moved to Hawaii. And everyone takes off their shoes there. (Once a surprise bridal shower was almost ruined because everyone piled their shoes outside the kitchen door without a second thought.) So I didn't just get used to it; I loved it. Shoes lasted much, much longer and the filth from the streets and sidewalks stayed outside.
My home is a very strict shoes-off household. I make no exceptions so if someone has to keep shoes on for medical reasons we stay outdoors or meet elsewhere. I try to accommodate others, to be considerate, but there is no way I want the spit, dog poop, oil and much more coming inside. For that reason I have purchased those disposable shoe covers if someone really doesn't want to remove their shoes. At work, I have a large private office and since I wear slip on wedge shoes almost all the time I simply take them off in the office and slid my feet back into them if I have to go out. My boss doesn't care so it's all good.
I have been going barefoot most of my life and I like it. I think that may be why, even though I am overweight, I have no trouble with my feet. (Not sure, of course, just a theory.) If I am cold, I put on socks. But no way, no how are outdoor shoes coming in. If I am visiting, I follow my hosts' rules. I'm easy. Or strict. I guess it depends where I am.