the first socks ever, were made of animal skin aka leather...they were meant to keep feet warm though, not for much else...as they've evolved they've become more anti-microbial and meant to keep feel either cool, or warm by how they deal with moisture. clean socks are better than none though hygienic reasons... but not wearing socks with leather boots or shoes is going to make those shits smell/sweat, period...please wear socks js..