Different strokes for different folks I guess. There are a number of guys and a whole lot of women, myself included, who for various reasons are completely comfortable and relaxed in situations where they are the only one who is naked.
The power balance gets turned on its head when the naked person shows no signs of discomfort and behaves naturally as easily as if they were fully dressed. The clothed people start to feel discomfort, embarrassment and like everybody else is staring at them. This is so empowering for the naked person.
For those of us who have felt that empowerment that college experience would have felt like having all our birthdays in one go. Our place as a living legend in the fraternity secured for life.