Is Desire Mysterious?

The nature of human desire is memetic, meaning imitative. humans rely on models outside of themselves to determine the objects of desire that they pursue. So if you put two pieces of meat in front of me and i don't need a model to help me decide which one of those pieces of meat to eat - my body will send a pretty strong signal as soon as my nose gets a whiff of that rancid piece  that i'm eating the other one.