Apparently the modern running-shoe has only existed since the 1970s, but people have been running for the entirety of human existence. This study finds that barefoot running ends up being much better for your body and is not prone to repetitive action injuries. I'll certainly miss buying expensive shoes that only last 3-4 months of running. ;-)
Running barefoot is better, researchers find
Katherine Harmon (2010, January 27). Scientific American.