On the day of death, most humans know whether or not they have ended their biological line’s existence on earth. If the departed passes with no biological children (and none on the way), and no stored reproductive DNA, an unbroken line ends irreversibly. At that point, the opportunity to continue to genetically and psychologically influence the lives of others is over, the once-in-a-lifetime window to prolong a 3.8 billion year process, gone forever. The finality is absolute. Or is it?