"Secondly, why is evolution so heavily clung to without scientific proof?"
That you ask a question like this shows that you haven't done any homework on the subject - either on evolution or on science, in general.
Science is not about what you can prove, it's about what you can disprove. My daughter's learnt this is 7th grade science.
Ever wonder why chemistry is taught as fact? In particular, have you ever wondered why the existence of hydrogen atoms is not conveyed to students as something that is in any way questionable? And yet - not one person has EVER seen a hydrogen atom. The truth about the existence of H2 is based ENTIRELY on inferences. In science, you don't have to see something to consider it factual.
Evolution, including the rise of humans and other apes from a common ancestor, is based on inferences about existing evidence - EXACTLY the same way that the existence of H2 atoms is based on inferences from evidence.
Science will never say anything about God. God and indeed ALL of the supernatural, if it exists, is by definition outside the purview of science. And neither theology, intelligent design, nor any other form of creationism is science.
