When you're going through something whether it's a wonderful thing like having a child or a sad thing like losing somebody you often feel like 'Oh my God I'm so overwhelmed I'm dealing with this huge thing on my own.' In fact poetry's a nice reminder that no everybody goes through it. These are universal experiences.
Death is really a great blessing for humanity without it there could be no real progress. People who lived for ever would not only hamper and discourage the young but they would themselves lack sufficient stimulus to be creative.