What is the meaning of the existence of comedy?

I am reminded of a quote by comedian Guo Degang, who said, "My comedy has no educational meaning, only humor." It means that his comedy is just to make people happy, without preaching. I think his understanding of humor is still at the level of amusing and funny, not realizing that the essence of humor is to reveal the nature of things. I really like to listen to Guo Degang's comedy, I think the vast majority of his comedy is very humorous, can make people in the sound of laughter to understand the essence of certain things, to understand some of the truth, these understandings is Guo Degang think "educational significance", see his comedy is educational significance.