I’ve heard it said that it’s unnatural to enjoy spanking or being spanked. That’s because, the person with the objection sagely adds, “it’s natural to want to avoid pain because pain is a warning sign“. A desire to inflict pain is “sick” because no person in his right mind would enjoy seeing someone in pain. So is spanking truly unnatural?
Calling something “unnatural” by itself is not saying much. Unnatural simply means “not occurring in nature”. In the case of spanking that is clearly wrong because humans engage in spanking and humans are, like it or not, a part of nature. Besides, there are many things which do not occur in nature – like escalators – but no one is calling them unnatural. So the real objection has to be something else.

People who call something unnatural usually do mean something else. They actually voice their disapproval, their distaste for a certain activity. Compare it with people who call homosexuality “unnatural”, despite it being common among humans and animals alike. What they actually mean is that the act isn’t palatable to them. And that’s fine, we don’t all have to enjoy the same things. I don’t enjoy ice skating. The difference is that I don’t call ice skating unnatural even though it clearly is. I don’t blame others for enjoying ice skating, I simply don’t go ice skating.
I think that’s the way people should approach spanking. You don’t have to like it, you don’t have to do it but don’t simply say that it’s unnatural based on your dislikes or worse: what you have been taught to dislike. Let people make their own choices in life.
In the end, I think that what’s really unnatural is people not exploring the desires that come naturally to them, that they are too afraid to try new or different experiences out of fear of being judged by others. What is really unnatural is denying your nature, denying what it is that makes you, you.