Bare feet can have various connotations such as:
Bare feet and spanking
Many spankers like the spankee to be barefoot, or at least without any shoes, while they are getting spanked. Also many spankees themselves like to be barefoot because it makes them feel more comfortable and at the same time also more vulnerable.
Bare feet can be part in raising of children. For instance in school p.e. lessons bare feet were often required by teachers or parents. Often in winter it was cold in the school gyms. It was also used as a part of a punishment p.e. lesson. Discomfort was a important part of experience.