best teaching story so far

So I'm helping the kids write a paragraph (3rd grade) doing a chalkboard graphic organizer on the topic "If I want to be really happy in life I will do the following things." Sub-topic "get a good job" comes up and all the kids get excited when somebody suggests "president" as a possible job. I asked the class if one would be really happy as president, they almost unanimously cheer yes. I call on the one girld who said no and ask why. She says, "because you'd have to go to war."