Answer:
You use a knife to slice my head but you weep beside me when I am dead
I have roots that no one sees and I am taller than trees. Up, up I go, but never do I grow. What am I?
What is easy to get into, but hard to get out of?
I can never be stolen from you. I am owned by everyone. Some have more some have less.
Angels and pilots work with me.
The answer I give is yes, but what I mean is no. What was the question?