I hate wearing shoes. I take the chance to walk around barefoot whenever possible, even in winter, and I will go down the road to the car or out to the bin with no shoes on, even in winter. There's a point of coldness you get to where you just don't notice it any longer, and if you walk around barefoot long enough, there are a lot of things that don't hurt if you walk on them, e.g. sharp, pointy gravel, like I have in my garden.
It's only relatively recently that people tend to own shoes; if you'd gone to Liverpool in the 1930s you'd have been hard pressed to find a kid with shoes (according to my mother
). And as has already been pointed out, shoes are still not common to all nationalities.