It’s a dissociative drug that has long been used as a field anesthetic because there’s a very wide range of doses that are both effective and non-lethal. It’s shown promise in recent years as a treatment for depression and certain other conditions that are resistant to traditional treatments. Ketamine is also sort of fun to do recreationally for the affirmation dissociative effects. Elon Musk is basically a drug addict at this point. He’s abusing it way too often and is healthy or safe to do