"Child's play" usually connotes a sense of ease that, uh, isn't actually available to everyone. If you were correct, then everyone over the age of 20 would have

"Child's play" usually connotes a sense of ease that, uh, isn't actually available to everyone. If you were correct, then everyone over the age of 20 would have a completely fulfilled life and would only care about money for the sake of making the world a better place. You might be shocked to discover that not everyone is like you. Not everyone feels sufficiently fulfilled in their own life. Indeed, some people feel that their fulfillment may come from "the advancement of society", oddly enough. But are they chasing the advancement of society for its own sake, or are they chasing it for their own self-esteem? I'd personally like to refactor the entirety of society. But, you know, that's childish and it's also just me.