Good Riddles

Question: Some people peel my skin some people don't, you eat me nevertheless, with or without, what am I?

Question: Without me you will not live. Without me you will not love. Without me you have no courage,what am i?

Question: Whoever makes it, tells it not. Whoever takes it, knows it not. Whoever knows it, wants it not.

What is it?

Question: What is it that after you take away the whole, some still remains?

Question: If you count 20 houses on your right going to the store and 20 houses on your left coming home, how many houses did you count?