Answer:
Sometimes I annoy you, sometimes you can't live without me. But no matter how hard you try, you can't destroy me. What am I?
The more you have me the less you see. Shine a light on me and I shall flee.
So simple, that I can only point. Yet I guide men all over the world.
What can you catch but not throw?
What is easy to get into but hard to get out of?
The answer I give is yes, but what I mean is no. What was the question?