I'm pretty sure it's a combination of: 1. The view that the naked human body can be sexually appealing / a temptation, so it must be hidden to prevent temptati

I'm pretty sure it's a combination of: 1. The view that the naked human body can be sexually appealing / a temptation, so it must be hidden to prevent temptation. 2. People not wanting to view the bodies of 'ugly' naked people. 3. Feeling a sense of vulnerability while naked.