If an asteroid did not hit the earth many tens of millions of years ago, the dinosaurs would not have been killed off, and their descendents might still have remained the dominant species today. The mice-sized mammals who were alive when dinosaurs ruled the world might not have evolved into humans. These contrasting positions must be debated in the realm of philosophy and theology. It is doubtful that they can ever be resolved by reason or physical evidence . We will not discuss this question extensively on this site.
Debate leads nowhere, and creates massive frustration.
Old species became extinct as others evolved. Only a small percentage of the total number of species that ever lived, existed at a given time. Debate over these issues are in the realm of science. Evidence from geology, anthropology, paleontology, nuclear physics, astronomy, and many other sciences can be evaluated. The rest of this web site will be primarily devoted to this debate.