"Go away, what a dumb question."
Why? It could be the only question, that is important.
"I know why I am here."
Do you know, or did someone tell you?
"I do not know why I am here."
Why do you not know? Are you not trying?
"Go away, I am just living."
"I think I know why I am here"
When will you be done?
"I do not know."
Why are you still here? Maybe you are done now.
"Go away, I am not done."
Time is up.