Once upon a time there was a big, beautiful park. It was very large, and there were dozens and dozens of different things for the children to do there. The park only had two rules: Everyone should have fun, and no one should do anything that might physically harm one of the other children.
Many children would come to play there. Some had been playing there since the park first opened, others showed up a bit later on. Some would come there to play almost every day, others would only come to play once in a while. Sometimes children would play there for a while, and then no longer come to play there anymore. They were too busy with other things, of they moved to a different neighborhood, or they incorrectly believed that nobody liked them there, and they were forced to depart for good.
Then, one day, a new group of children came to play at the park. They didn't know each other before they arrived there, but they quickly discovered they had many things in common, and they liked playing the same games. The group began to grow in size, and even some of the children who had been playing in the park for a long time began to join them in their games.
And then something very strange began to happen. The children who had been playing there before the new children arrived began to grow resentful of the new children, perhaps even jealous of them. They began to say things like this park was much more fun before "they" arrived, and this is "our" park and not "theirs," and "they" have no right to take over our "park."
The funny thing was, the new children hadn't really done anything to encroach on the enjoyment of the park for the children who had been there longer. It was still the same park, and it still offered the same wide variety of activities. The children who'd been there longer didn't really want to join the new children in their games, and many of them thought the new children's' games were boring, and very silly.
Then, one day the old children realized something very important. The park was still exactly the same place it was before the new children arrived. And they could continue to enjoy the park as they previously had, irrespective of the new children's presence.
And they all played together happily ever after.
THE END