@Handsoffisback
But what benefit do they have in seeing a wrinkly old man’s penis? If they enjoy being naked, they can do that at home or in the paddling pool in the summer. They don’t need to do it in front of strangers.
It's interesting that you've given the example of a 'wrinkly old man' because that does rather reinforce
Ster's point:
People on this thread have mentioned things like the benefits of seeing natural bodies, body positivity and they are also benefits. Seeing body confident people is another one - people with mastectomies, disabilities, operation scars, tattoos etc.
You may counter this by saying that the same would apply to the penis of a fit young man, but we have to ask ourselves why the bodies of the old are the first to leap to mind as being something unpleasant that there can be no value in looking at.
There are different views on the 'youth worship' of modern British culture - personally, it saddens me when I read of young women botoxing themselves at the first sight of a frown-line, of 12 year olds buying anti-wrinkle face creams and so on.
When it comes to bodies, often young people's ideas of the naked body are informed by air-brushed pictures of celebrities, or even pornography - which can lead to body dysmorphia, eating disorders etc. because people have few opportunities to see what real and ageing human bodies look like, in a context free of sexual titillation.
Of course, naturism is not the only 'answer' to this - but it's one way of teaching young people what is normal and realistic in the human body.