How reasonable is reason?

How does one explain the unexplainable? How does one explain feelings of rightness (as opposed to feeling right)? How does one explain comfort when this body and mind have but a paper-thin armor of skin in an environment of sticks and stones and microbes and exploding stars? How does one explain feelings of security when fear and anxiety are a part of all humanity? Perhaps a mind evolved to think the irrational, rational, makes living possible? Or maybe evolved strategies to block out the precariousness of it all, saving the mind from itself, saving it from seeing what it actually sees? For me a former "experiment" with meditation upon nothingness produced unexpected results. I found that when one purposely peels away what evolution has taken forever to arrive at, one comes to a "sum zero" point when one equals one and no more or no less. I found it not a pleasant place, to observe everything as everything is, without a filtering mind, is as close to meaningless as I dared to go. I think reason a slippery word. We seem to want anything with meaning to thereby have a reason, a reason for being meaningful. I have a watch. The reason for having the watch is to tell time. Not only is telling time reasonable, but it is helpful in coordinating one's activities with others. The modern world revolves around a standard of time using watches and clocks. Yet the reasonableness of this becomes unreasonable and absurd in a world without modern humans. A watch left behind on the moon would immediately lose its value and meaning, yet may continue to tick accurate time for years. What I mean by all this rambling is that I believe a universe without reason and meaning can but yield all that exists within it equally without reason. Reason then is no more than a ticking watch on a barren moon. Even so, I understand the reasonableness of others in not accepting this conclusion.