It is possible for matter to have a beginning. In a closed universe the gravitational energy which is always negative exactly compensates the positive energy of matter. So the energy of a closed universe is always zero. So nothing prevents this universe from being spontaneously created. Because the net energy is always zero. The positive energy of matter is balanced by the negative energy of the gravity of that matter which is the space time curvature of that matter. There is no conservation law that prevents the formation of such a universe. In quantum mechanics if something is not forbidden by conservation laws, then it necessarily happens with some non-zero probability. So a closed universe can spontaneously appear - through the laws of quantum mechanics - out of nothing. And in fact there is an elegant mathematical description which describes this process and shows that a tiny closed universe having very high energy can spontaneously pop into existence and immediately start to expand and cool. In this description, the same laws that describe the evolution of the universe also describe the appearance of the universe which means that the laws were in place before the universe itself.Your "logic" is illogical as it has been proven that energy can neither be created nor destroyed. Your pontificating your own "definition" cannot disprove the repeatable experiment that proved that energy can neither be created nor destroyed. That is the most basic Law of science, proving you know less than nothing about science.No, that is your logic. My logic is based upon the solution to the first cause conundrum. Which is no thing which is eternal and unchanging. By definition it can be no thing. Not matter, not energy.So did energy. By your logic that makes energy your God.The laws of nature existed before space and time.
So, no, energy as we know it could not have existed forever. Please tell me more nonsense about the TLOT