Wider and stronger feet make you less injury prone. I did a vertical ultra / mountain race barefoot this summer. It was awesome. Barefoot in the rain is even more pleasant. No wet shoes or socks to deal with.

https://blossom.primal.net/0ca407cb2c6a0e04227e9593c46a4e0fce0a71d4838d7dbea244fab62b8810f3.mov