Training in effective self-defense can be extremely important especially in the face of today’s extreme situations. Training on defending oneself should be as basic as health and obtaining food and water. You never know when you could be a victim of random violence today. It can happen in the best of neighborhoods.
Self-defense training is rather different than training for fighting competitions. It can take many forms because we cannot know in advance what type of an attack will occur. An art like Wing Tsun kung fu takes this into account.