It leads one to being able to believe contradictory things. Science can be believed and religious things can be believed even if they absolutely contradict each other. If all I have to do is merely believe, then there is no limit to what I am allowed to believe. The buddhist can say that all we have to do is believe, the moslem can say that all we have to do is believe. Belief does not make things true.
Evidence makes things true.
Evidence is important. We have similar backgrounds. I am a geophysicist in the oil industry and manage a group involved in finding oil and gas. I am very aware of the geological issues involved in any harmonization. One can't prove a negative.