Is It Logical To Believe In God? ...

Yes, the maxim goes: “Out of nothing, nothing comes”. Matter can't arise from pure nothingness, (as some who study quantum physics believe) and by the way, a vacuum is not “nothing” because it contains space) God created space too. The fact that something exists proves something must have always existed or be eternal; namely, God. Nothing, and that includes all matter, can create or cause itself. Everything that exists in the time-space continuum has a beginning and therefore a cause. And that’s because everything that begins to exist has a cause.

It all goes back to the First Cause that is responsible for everything. Even the creation (Big Bang) had a beginning and therefore a Beginner. The beginning of creation had design and purpose and was not chaos. Logos (logic) cannot arise from chaos and without Logos is no cosmos. This shows signs of ID or intelligent design from an Ultimate or Supreme MInd at work.

Pure energy would be nothing but chaos and isn't organized; it takes logic and design to make it useful energy (random to kinetic). That comes from a master Designer or Creator. When Carl Sagan said, “The cosmos is all that is or was or ever will be,” he forgot about ID or the intelligence in the cosmos as the missing ingredient necessary for creation. It seems like creation was pre-programmed with universal constants or the laws of nature.

NOTE: Logos means many things including law, order, design, purpose, expressed thought, and logic.