People who first meet our children often note how happy they seem, how often they smile. In part I like to think that this is because of the love and affection they get from home, but I also like to think that we have taught our children that they can control whether they are having fun or not. I often hammer this point home in my introductory courses in religion. Sitting around a table with one's family all healthy and eating delicious food ought to be perceived as highly enjoyable. But there are different kinds of fun.
Some fun is particularly conducive to rich experience.
Those activities in which a person is expressing his or her aliveness are the most fun. Look at a toddler. A toddler is an absolute fun-professional. All they do all day is play, have fun. By moving, by arranging things, by running back and forth, by banging things, by splashing in a tub, by eating.