DiscoverDave,

One of the great things about science is that it doesn't care what you believe.

Your personal inability to accept that a scientific theory is the highest status that any scientific idea can acheive, does not affect how accurate the theory is. Evolution is not "just a theory". The Big Bang is not "just a theory". What matters to a theory is how logical it is, how powerfully it explains, and the quality of the evidence supporting it.

What you might call "just theories" are actually hypotheses.

To argue otherwise is the logical fallacy of Persional Incredulity.

Please, you are on a science forum. Readers take posts seriously. What are they to think when they are looking for good information but instead find irrational opinions?

Finally, hopefully you already know this, but the origin of life (and the origin of earth and the universe) is not part of the theory of evolution. Evolution explains what happens after life (including simple precellular precursors to organisms) has been formed. There is currently some good research investigating several plausible ways in which life could have originated.