The reason why we don't stop at the universe is because if the universe always existed (even though it is 13.7 billion years old), then mankind would have approximated into that alleged past eternity and not stilling sinning to the extent we still do along the exponential progression of conscience we are clearly on. This scientifically proves the universe could not have always existed, so we are left with no other possibility than there must exist the uncreated Creator. This is irrefutable pure logic.

You admit "the universe started" but since the universe can't come from nothing, since that which doesn't exist can't cause anything, then what other option is there than the uncreated Creator?

Now that we know with absolute certainty the uncreated was created by the Intelligent Designer it would seem reasonable to ask who He is? We can discuss this later, but by comparison, none can compare to Christ and such a perfect proof as His resurrection.

Actually God did not create the universe in 7 days. God created our universe over 13.7 billion years (Gen. 1.1), then the inhabitants of earth's earliest ages sinned so greatly, that God had no choice but to make earth desolate and waste (v.2). Therefore, the 6 days are 6 literal days that sum up the period of restoration and man in His image from dust (over a long period of time) when He breathed the breath of life into man directly creating his spirit, and when man's spirit made contact with the body from dust of the stars, the soul life was formed.

Man became a living soul with a spirit and a body (Heb. 4.12, 1 Thess. 5.23).