We are trying so hard to make a living. Some even commit crimes to survive or for their selfishness. No matter how much we can get legally or illegally, especially material things, we will one day disappear from this earth. We cannot get all those glamorous stuff with us, once we die.
Reminding ourselves every day that we are going to die one day, can make ourselves feel more satisfied with what we have and give a helping hand for those who are in need. Death is the ultimate time for everyone, therefore, we should spend our lives with more valuable work and valuable people (e.g. family members, workers, sports we like). In another word, leaving a good legacy for the next generation to come. Build useful things, writing books for young generations to learn from our experiences, build schools or orphanage, donate to charity. Live a meaningful life.