I go to the nude beach because I like to tan all over, and I love the feel of the warm sun and the fresh air on my entire body, in an environment where I am totally anonymous.
If I try to do this at home in my back yard I have to worry about the nosy neighbors peeking thru the shrubs, and the small planes circling overhead. Are they taking pictures? Are they going to be talking about me at work, or at church? Is somebody going to complain to the authorities and I get my name in the paper for being a flasher or a pervert?
Most of the people I see at the nude beach aren't showing off, nor are they hiding their "package". Most of them are just ordinary looking people like you'd see at a clothing beach.
Once in a while I see a really nice looking female, and I can look at her and appreciate her beauty without lusting after her, or getting aroused.
If a person goes to the nude beach to gawk, they're not going to be welcome there.