"Common sense" does not trump actually looking at the evidence, and understanding why it is compelling for scientists, before trying to characterize it.
Evidence??? The "lack" of fossil evidence is an 800 Pound Gorilla that "die hard" Evolutionist's cannot shake. "Theory" my friend... We are debating "Theory". Evolution is a long ways away from being "fact". Wasn't too long ago that "science" insisted the world was flat and that "Earth" was the center of the universe...