Laughing sometimes substitute from using vulgarity & combative behavior. It also stops you from screaming out loud at petty situations. Laughing stops you in some instances reaching your boiling point.
Laughing can be useful in blood pressure rising situations. Laughter is always a method preventing anger. Being humorous happily is always a sound alternative. I will always go for laughter, its satisfaction guarantee. I don’t like stupidity and complicated situations I preferred SIMPLE SUBSTITUTIONS.