When I was a kid, all of our bikes came with those types of pedals. But we were even more insane and used to go buy the "bear trap" pedals and change them out. Those things were even worse for your shins.
But yeah, the things in that picture definitely made you tougher. You'd go home with new scars just about every time you went outside. And to this day, I'll get a scratch or be bleeding and have NO idea how I got it or how long it's been there. I also still have a few scars from when I was younger; 1 on my head, 1 in between my little toe and the next toe on my right foot, and one on my shin (not from a bike pedal, though). but I can remember the moment that gave me those scars, where I was, and who I was with.