Because we do know, and because evolution is one of the most established theories in science. Thanks for googleing "electron transport chain". Now at least you know ATP exists.
Here’s an article on my site that discusses a few of the problems with evolution. It was written by a geneticist friend of mine.
http://usabig.com/iindv/articles_stand/pee/evolution.php
She’s also a nurse, by the way.
Evolution is a fairy tale, just like creationism, only the story tellers of evolution have to keep changing their story, because they pretend it’s a science, just like environmentalists, another academic religion.
Why do people like you presume things about people you do not know and know nothing about?
Hank