“Dinosaurs existed in the real world, not in computer programs and in the real world we don’t know why they died out.”
We don’t know how they died out? Having implicit faith in the veracity of the Scriptures, my money is on the Flood of Noah as the turning point for many species. The Scriptures give us the ages of some of the pre-flood men. For instance, Methuselah, who was Noah’s grandfather lived a long time. Gen 5:27 And all the days of Methuselah were nine hundred sixty and nine years: and he died. Noah himself lived 900+ years; 300+ after leaving the Ark.
But human lifespans dropped off precipitously after the Flood. For instance, the Patriarch Abraham only lived 175 years, compared with Noah and others from the pre-flood era’s 800 to 900 plus years. Gen 25:7 And these are the days of the years of Abraham’s life which he lived, a hundred threescore and fifteen years.
The climate on planet earth was completely different when they came OFF the Ark from how it was when they went aboard the Ark. I believe it was the climatic change that caused their demise.