Answer:
I hatch without food
So simple, that I can only point. Yet I guide men all over the world.
What is easy to spot but hard to find?
I am two-faced but bear only one. I have no legs but travel widely. Men spill much blood over me. Kings leave their imprint on me. I have greatest power when given away yet lust for me keeps me locked away.
Take off my skin I won't cry but you will.
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.