Why Just Children ?
We focus on children since:

It's healthy for adults to go barefoot too. However, a high (and growing) proportion of today's adults are fearful and inhibited about going barefoot under almost any circumstances. And it's not surprising when one considers the myths and misinformation we absorb during our childhoods about foot health and the perceived dangers about going barefoot. Most of us have grown up hearing   "Get your shoes on"  over and over and over again.