Not that I mind, but... wearing shoes has a purpose... and the most important one IMO is to make sure our feet stay harms way from broken bottles, nails, stuff like that.
I'm not even gonna get into how cold it must be not wearing them in the winter... or how hot the asfalt might get during the summer. The asfalt can go up to 80, 90°C where I live during the summer, people have fried eggs on it for kicks.
All I can think about is how disgusting their feet would be. For me shoes are a berrier between all the dog piss/shit, and other grime and filth and are to be removed at my front door. No way I'd let these animals walk into home with those nasty feet.