I have arguments that may convince the Super Happy Fun People not to drug our babies happy. 1. Humans have evolved to make choices, and receive the deepest pleasure from making meaningful decisions. If everything is pleasurable, then that robs decisions of their complexity, and thus meaning. 2. Our brains can handle only so much stimulation, too much awareness given over to happiness and there's no room for anything more. This is why our descendants are shown to be reliant on computers for data storage and translation, and still argue over choices like angry monkeys once they grep the situation.