I fail to see how it's irrelevant. I think, maybe, it's the most relevant thing. I think people are misunderstanding me. Obviously, I see life as relevant. However, trying to explain why life 'is', as it were, is irrelevant. You don't need to know the answer, it's extremely unlikely you'll find it and, IMO, searching for it isn't living at all. Unless of course, as Scruffy mentioned, you really like the challenge of finding out the answer, then by all means go ahead and live that life.