Parents raise children then grow old, and their children forget the things their old parents did for them, because their brains don’t remember before they grew selfish. There are buildings all over the world full of old people sitting around looking out of windows, full of hate for their selfish sons and daughters. And meanwhile, the selfish sons and daughters look out of their windows at their children playing and think how wonderful their unbreakable bond of love is between them and their children.