There is a lot of meaning behind the act of having fun.
"Fun" is defined in so many different ways. It's dynamic. But all of them include a seemingly indescribable feeling that everyone craves.
That feeling brings out the best in all of us. A feeling if we all had more of more often this world might just be a smidge better. It's odd that experiencing this feeling is not socially pressured onto us like it is to eat healthy, exercise, hydrate, work hard etc.
Go have fun.