I have slip on house shoes that are like slippers but being shoes they have a sole that can keep me from stunning toes on the stuff family members leave around. Plus they are more insulation when the floor is cold.
I don't always take off shoes right at the door though if they aren't wet or have obvious dirt or stuff on the bottom. Yes, that tracks some stuff in but regular floor cleaning takes care of that.
It is funny that the person I know who is the most strict about not wearing shoes in the house likes to walk around barefoot outside and then walks right in the house like her feet didn't pick up the same things as shoes.
House slipons are different! Like the other reply, I guess I'm more getting at that distinction between indoor and outdoor footwear. And something like walking on your porch is fine in either (to me), but I wouldn't go walking around the mall in my slippers any more than I keep sneakers on in the house.
I have a pair of slippers I use to take the trash out to the can (adjacent to the porch), but also typically only wear socks inside the house (usually fluffy warm ones in the winter, or ankle socks in the summer)
I would disagree, they are footwear but I don't usually think of it as a shoe if it doesn't have a hard sole.
That said, house shoes are a thing as well, and it's my mistake for not including it in the list. I guess my line of thinking was, there are types of footwear for streetwear/outside, and types for indoors, and I think it's a little weird to mix them.