Yeah, asexuality really is a thing because they are people who are really like that. My guy friend is like that. He has zero interest in *** at all. Relationships, dating, marriage serves no purpose to him.
Things in society are getting more and more complex because humans are becoming more and more open. The percentage of asexuals are really low, they are not many people who are like that. That's why are not as famous as the big three.