Answer:
If you have it, you want to share it. If you share it, you don't have it.
So cold, damp and dark this place. To stay you would refrain, yet those who occupy this place do never complain.
What do people want the least on their hands?
Of no use to one, Bliss to two. Men lie for it. The baby’s right,
What kind of nut is empty at the center and has no shell.
I run through hills. I veer around mountains. I leap over rivers. And crawl through the forests. Step out your door to find me.