We were all born into this world and get to live our lives. We can choose to live a holy or an evil life or one anywhere in-between. Then when our time is up, we all die. So what does it matter how we live our lives? Answer: It matters a lot because we have a soul that live on forever after death. This life is only the infinitesimal beginning of our everlasting existence. You want to live it right in order not to screw up your whole eternity.