Destructive thoughts and emotions undermine the very causes of peace and happiness. If you think clearly about it, it makes no sense to think you’re seeking happiness, if you do nothing to restrain angry, spiteful, and malicious thoughts and emotions.
Every art form changes, often at rates and in ways that cause discomfort to its devotees. But the arts also have a remarkable ability to withstand and absorb those changes, and to prove wrong the prophecies of their demise.