The problem I have with this is that, everything material ages. Time goes on. Nothing lasts for ever, not even the strongest materials we know of, eg. Diamond will last forever; thus everything has an end, and most therefore a beggining, because to suggest that an ending exists, one must have also started in order to reach that end.
The only way anything could be eternal is if something immaterial were to exist, which is a common suggestion of Substance Dualism. The problem with this theory is that if God were real, and were eternal, it must be immaterial. The laws of logic and science dictate that for anything to interact it must share similar properties. When a billiard ball strikes another, it transfers kenetic energy, because both balls have a mass, velocity (0 if stationary, but still a velocity) and other physical properties. If God were real and therefore immaterial, he would not be able to create or influence anything within the material world. The bible teaches that God is omnipotent, so would be able to interact with the world. The only ways out of this is to suggest one of 3 things. 1. God is material, yet real, and therefore is not eternal, and cannot be omnipotent. 2. God is real, yet immaterial, and therefore not omnipotent as he cannot influence anything in the universe that is material. 3.God is not real, because the concept of omnipotence and omniscience defy anything logical.
These is the primary reason I lost my faith.