A good source of energy provides adequate calorific value at normal ignition temperature with no or at least at minimum damage to environment and people. The main objectives of this study are to identify the facts converting the sources of nuclear energy into reasons for future disaster of people, environment and earth. The study also works on the prospects of Energy from Nuclear Fusion. The results of the study disclose that radiation (emitted outside during nuclear fission) , Nuclear waste or Nuclear accidents are not responsible for any type of disaster to this society because they are released in a planned and monitored way thus not resulting in a disaster at all. We can see a bright future in Nuclear Fission and Fusion process if guided by a noble motive of doing welfare to society; not for satisfying one's greed to control others.