Good Riddles

Question: What is it that no man wants, but no man wants to lose?

Question: I am a cave full of bones,
and the house of a worm.

What am I?

Question: Samuel was out for a walk and it started to rain. He did not have an umbrella and he wasn't wearing a hat. His clothes were soaked, yet not a single hair on his head got wet.

How could this be?

Question: What has 4 fingers and a thumb, but is not living?

Question: What temperature is twice as hot as 0 degrees Celsius?