That's pretty amazing, but you are a bit of an anomaly. I know that my feet aren't that tough. But staples? Pff. Besides, staples would be laying flat.
Yeah, right. At the moment its 55°F here in Germany. So no problems being barefoot obviously. Worst experience I had was many years ago, before I began barefooting. It was a cold day (like -5°C) but dry and sunny so I put on my oldest, but most comfy canvas shoes and thick socks. Went to university and by the evening as I looked out of the window I realized that it was heavily snowing. Was not in the forecasts and nobody was prepared, apparently. Traffic broke down, no busses. So I decided to walk home, which is about half an hour normally. And then half way my old shoes fell apart. Couldn't walk in them anymore so I threw them in a bin and walked the rest on my socks. As I came home I couldn't feel my toes anymore and it took like an hour to feel comfortable again. Luckily (perhaps not for the environment but for me), winter in the last years were really warm (compared to before) so no snow in the city anymore and if, then only for a few hours before it melds.
@slartibartfas0815 And this is why I only snowfoot in the safety of my home yard, or in the immediate vicinity thereof. Because that's where I have control, and the ability to evacuate to safety if shit goes sideways. You were in an unsecured location, far from home and poorly prepared, so you had no control and so your feet were put in harm's way. This is why snow boots are still a good idea, when you go someplace far from home in winter time. Conditions can and will change rapidly, and they often will not be in your favor.
Besides, most Staples lay flat meaning that you'll just step over them unless you are skidding your feet on the ground. And even if it does enter, it'll probably enter horizontally meaning it'll just pierce through the upper layers of skin if you've got soft feet. Harder feet will not be scratched.