For the most part secularists use their tools in an attempt to disprove spirituality for a variety of personal reasons.
Well the scientific method IS all about disproving theories and hypotheses. It is to avoid confirmation bias, and the opposite of what religion, or spirituality does, which seeks to confirm. So yes, it is based on feelings. You can't KNOW that anything has been revealed, because you can't test it. Therefore you simply BELIEVE it because it feels right. I offer as evidence of this all the religions of the world today and throughout history. Each culture believed something different about specific signs or observations. Therefore none of them KNEW, they simply believed because that's how they felt about it. Your feelings are no stronger than the feelings of the Zeus worshipper, and yet somehow, you seem to think that your belief is more valid. With no way to back that up, you simply rely on what feels right.