Why Is Halloween Bad According to Theravada Buddhism? Introduction: Halloween is bad according to Theravāda because it involves dressing up, acting and embodying the costume one is wearing, often involving unwholesome characters. This can lead to a bad destination, and I will explain why. It is like Acting: Acting as a career, generally is not so wholesome. If there is any movie or play that is considered “good” by literature and Hollywood standards, there are going to be one or more of the five