What did you think, that joy was some slight thing?
You asked for philosophy and I am bringing it, late-night dorm-basement style. But I’m not just splitting hairs. This variety in our actual experience suggests — I think — that Camus got the question wrong, or that the question itself is the problem. The only important philosophical question isn’t why we each, individually, might choose to live. It’s how to live with each other, given that the facts of our lives are contingent on the facts of others’.