Naturists/nudists often claim that their way of life is more natural, that being nude is about "returning to nature." I'm going to show that this isn't the case, that the so-called naturists are in fact acting in a way that's fundamentally against nature or, more specifically, against man's place in nature.
One reason why many perceive nakedness as natural is because, well, if nature (or some supernatural being) had "wanted" humans to wear something, we'd all be covered in fur. But this isn't so: the only reason why we never evolved fur is precisely because we were able to manufacture and wear clothes. Had we not had this ability - the ability to use tools according to our relatively superior mental capabilities - we'd have needed fur to survive, at least in this environment. We were never meant to walk around naked. Our ability to make things compensates for our deficiencies such as our weak physical strength or agility. We adapt by thinking.
In other words, had there existed "naturists" in these latitudes a few thousands years ago, they'd have simply died out. So much for being natural! Another ironic feature of modern Western naturism is that it's been made possible by technology. Heating, among other things, makes it possible for people to walk around naked in their homes.
I really don't care if people choose to make themselves look ridiculous by adopting a naturist lifestyle, but some people drag their children into it and that's what bothers me. Of course they argue that there's nothing sexual about their perversion, but this is just wishful thinking. Their children, teenage girls most worryingly, are exposed to lustful eyes.
There are of course other, more social arguments against naturism while the above dealt with biological aspects. Also, different environments favor different traits, which means that there are environments where wearing clothes is a disadvantage.