On the new Earth in the new "Heavens" life will be wonderful. There will be no sicknesses or diseases, and no genetic disorders. There will be no misery or unhappiness of any kind, not ever, for most people. People will live a whole century, and die, and after they have returned to their people and rested, they will reincarnate into new sanctuaries over, and over, and over again forever. This is truly how eternal life works.