Myths and Legends

Where do myths and legends come from? How much truth do you think there is to it all? How much is imagination? Most myths and legends are really old stories. Back in the days where everybody was in search of the truth and did not encourage developing imagination like we do today. Today there are fiction stories all around us, and they keep getting more and more out of this world and impossible. However, back in the day many people were determined to learn more and discover the truth. But did they really believe some of the myths and legends? Did they just make it up? Where do these things come from?