Energy to Matter makes sense
15 billions years ago our universe creates great amount of masses from enormous energy to us. Now, although we are in no shortage of mass, does that mean we should drop the idea of creating masses on our own hands?
Masses are abundant but not all precious. Many wastes are produced along with large amount of heat and light. Just imagine, if we can store the energy (such as unuserable heat and light) in a "package" of mass, and then reuse or unwrap the package to gain useable energy, that will be too great.
On my personal note, the nature and essence of our destination in the world of universe is to understand the process of energy to mass and mass to energy as well. This is the universal theme hidden in darkside of the power. It is miracle.
Einstein is famous for the law "E=m*c2", however is there a equation of somewhat "M=e/(c2)" and what does that mean?