Buddhists are rather serious people, won’t wear make-up and never have any fun

People tend to think that the disciples of the Supreme Buddha take life seriously. I feel that there is a grain of truth to this. Is this observation of others true? If so to what degree? I’m in search for a good answer to this question. This is not a casual and fun question, but a rather serious one. This is a question that will make you reflect, make you think. So please work through it and look inside to see what you really feel. My goal is to make me think, and to make you think before answering it.