What Am I Riddles

Question: When you need me, you throw me away. But when you're done with me, you bring me back.

What am I?

Question: What goes on four legs in the morning, on two legs at noon, and on three legs in the evening?

Question: I can be cracked, I can be made. I can be told, I can be played.

What am I?

Question: I fly, yet I have no wings. I cry, yet I have no eyes. Darkness follows me; lower light I never see.

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?