Im sorry if you dint realize how nasty that is.
You see, no matter what activity you are doing, even if you are just taking a short walk, your feet are one of the biggest parts of your body that sweats. They are usually the first to sweat because they are trapped in a closed area with no fresh air coming in or going out. Socks have fibers that prevent your feet from getting too hot and therefore not sweating anymore than you have to. Also, without socks, your feet will rub up against the sides of your shoe giving rub marks, painful heels and much more. Also wearing socks prevents the spread of bacteria. You can wash your socks so the bacteria doesn't stay in your shoe or make it stink. You can wash your shoes too but you can never really get into all the cracks and crevices that they obtain...Please wear socks.