What are you talking about? The Proto-Indo-Europeans most likely originated in the steppes of what is now southern Russia, not in the Middle East. It is not until the 2nd millennium BC that we find some notable Indo-European groups in the Middle East, like the Hittites and Mitanni. Other Indo-European groups like the Persians don't appear until even later. By that time, non-Indo-European civilizations were already well-established in the Middle East for millennia.

What I said is not a "theory." It is a simple statement of facts. The earliest writing and literature in the world is from the Middle East, and most Europeans had no literature whatsoever until the Christian era (other than southern Mediterranean groups like the Greeks and Romans, who were more similar to Middle Easterners than to northern Europeans).