There is a difference between certainty and being cocksure. Besides, you are talking about a future scenario you only believe to be true, and gambling on it, while I am talking about the ego and how it works, something everyone experiences directly in the here and now, and not in some future fantasy based on the ego, which is an illusion to begin with!
Who is it that lives?
Who is it that dies?
You are not 'living life'; life is living itself as 'you'. There is no experiencer of the experience; there is only the experience itself, and what is thought of as 'I' is none other than that experience.