Answer:
Poor people have it. Rich people need it. If you eat it you die. What is it?
What is black when you buy it red when you use it and gray when you throw it away?
I think you live beneath a roof that is upheld by me; I think you seldom walk abroad but my fair form you see; I close you in on every side you very dwelling pave and probably I'll go with you At last into the grave.
People make me, save me, change me, and raise me. What am I?
When you need me, you must find me. When you find me, you no longer need me. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.