No one created God as God as always been. This is rational and logical. Why? Because if there was a time when there was nothing, absolutely nothing, how could there be anything but nothing now? Unless, as some do, one declares matter as illusionary. Or that matter can somehow generate itself. Science has disproven each of these claims. The theist then believes in an uncreated Self Existent Being believing matter exists, cannot create itself, and is not illusionary.

Also typically affirming the existence of matter is the atheist. But their argument is that the universe (and hence matter itself in some form) has always existed. Matter rather than God is self existent. Science often refers to this as the Point of Singularity.

Interestingly, it was a Catholic preist, Georges Lemaitre, who advanced Big Bang Theory. It was called Big Bang in the perjoritive by an atheist scientist. The Big Bang Theory states that the Universe began in an instant. This flew directly in the face of the scientific view that matter and the universe was self existent. Two scientists, Penzias and Wilson, were working at Bell Labs with their horn attenna located by the water and lots of bird activity. There instruments produced a constant hum, so they disposed of the birds and cleaned the antenna. The hum remained. They had by accident discovered cosmic microwave background radiation, the fingerprint of the beginning of the universe. Both men won the Nobel prize for their discovery, but many were initially reluctant to accept the discovery due to its theological implications.

Einstein also believed in the self existant universe. Then came the discovery of the expanding universe. Einstein had to go visit Dr Hubble and see Red Shift with his own eyes as he couldn't initially accept it. Einstein even altered a key calculation dividing by zero to maintain Steady State.

In the philisophical realm, the atheist's strongest challenge is the existence of OBJECTIVE Good/Evil. A tough challenge indeed.

But the atheist (often a Darwinist) has a challenge also.
The atheist, at least an intellectually honest one, must acknowledge that with respect to human behavior there is no OBJECTIVE Good or Evil.