There is in principle an advantage to believing only to the extent that those beliefs reflect reality. Beyond the domain of correlation between the facts and what one believes them to be, there is no virtue in believing for belief's sake. Refusing to be constrained by an improved understanding is seeking escape from the terror of the unknown through the refusal to acknowledge ones own ignorance.
Passion serves us well only to the extent that it is tempered by an acknowledgement of our ignorance and directed toward the pursuit of an improved understanding based on knowledge which is its only justification. Passion, like belief, is not an end in itself but a means to an end best foreseen, through an understanding of that which drives it based on a knowledge of what justifies it.
There is no reason for anything, neither apart from nor beyond reason. Reason . . . it’s why we are here.