Im sad..... I've put over 20 hours probably into a game of Civ 5 in singleplayer and I accidently nuked one of my allies and everyone on the planet went to war with me and then because I didn't know what do to and I had like 2-3 nukes in my 19 cities, I used all my nukes and killed the world and now I is sad because the game is over because I basically killed every living thing....................... Why did people invent nukes if they knew someone like me would kill teh world..........