Be careful - "Morris Dancing" is used as an umbrella term for different and generally unlinked regional dance traditions with totally different origins and reasons. People usually seem to be thinking about Cotswold Morris when they make posts about it and go on to make make sweeping generalisations based on that tradition! But what is it for? What is singing for? What is playing instruments for? The world wouldn't stop turning if we didn't do it, but it would be a duller and less colourful place.