I sleep with thee, and wake with thee, And yet thou are not there; I fill my arms with thoughts of thee, And press the common air.
Mere lack of evidence, of course, is no reason to denounce a theory. Look at intelligent design. The fact that it is bollocks hasn’t stopped a good many people from believing in it. Darwinism itself is only supported by tons of evidence, which is a clear indication that Darwin didn’t write his books himself.