Sounds like most of you need to spend 20 min in a nude beach simply for the education. First of, 99.9% of people in a nude beach or nude places in general are not looking at how good or bad you look. We all can tell that without you taking your cloth off! Second, you are likely the only one worrying about how you measure up. Third, clothing optional places have a slice of the general population with the same proportions of fat people, short people, old people, young people, skinny people, etc, but for reason people that have never been to one seem to think it is like going to a supermodel convention!
Don't mind me, I don't mean to offend, I just still like junior high school humor.
I did date a nudist for several years and went to many a nude hot spring, nude beach, and even a nude "barter fair". I went to enough clothing optional events (and even optioned not to wear the clothing) to get comfortable with "letting it all hang out."
I have to say though, that even after I got comfortable with being nude or going to a nudist event, I never could wrap my brain around why it was better
to go to any particular event in the nude. My nudist girlfriend would want to go on a road trip just to be able to go to a nudist event, whereas I didn't see it as any better or worse than a local arts fair or event. Why drive so far for a similar event that was a "nudist" event? I guess I just never "got" why it is better for everyone to be nude than clothed.