Every soul shall taste death

Allah has said in the Qur'aan: "Every soul will taste death." From this verse we know that death is such a thing that you can't escape from even if you are in a house, which is built with metal walls, and has a massive padlock. Death will not only come when hair and the beard turn white, but it can come at any time, even when you are a baby, or an old person or a teenager or of middle age. Even if you are a king, a prime Minister or a leader of one of tribes.
Death also came to prophet and to the companions of the Prophet, so if death can come to such great personalities, who are we to be so unmindful of it?