Security ... think about it!
The true objective of self-defense is to survive and escape death or serious injury from an attack. That objective is very clearly first and best accomplished by conflict avoidance which is made much more possible by knowing the ways of the human predators. That is how they think, how they chose their victims and thus how not to appear as an unattractive and ideally unacceptable victim to them. Self-Defense training must also include de-escalation and conflict avoidance training and skills. Asian martial arts do not even address or acknowledge the need or existence of any of these critical survival self-defense skills at all. Instead Asian Martial Arts follows a syllabus almost wholly devoted to the practice of physical technique alone. The majority of that physical technique is wholly impractical for most people to employ effectively in an actual self-defense situation too.