@Karthikdeva Reason only works within a set of first principles. Those first principles are things that we must believe without reason. Additionally, those things we must believe to think and interact with the world are not enough to grant us meaning. Often having principles that make life meaningful is more important than having ones that make good scientific predictions. Also most people aren't scientists. Science is just what some guy in a lab coat says it is after taking a lot of money from nebulous sources to play with expensive toys. Why wouldn't you doubt that?