What is reason? Is reason a human thing, or something that grows in nature, as the nature of everything? This for instance makes no sense to us humans as why every few hundred million years or so life on earth suffers from mass extinction, due to one or the other of catastrophic happenings. The geological history is marred by such chance happenings that our good reason grapples with for some sense. This is unlike anything that we like to happen to our only home in the universe, our tiny planet earth.
This makes no good sense to our way of reasoning as why life is vulnerable and predisposed to random occurrences of natural catastrophes and disasters like: earth quakes, meteorites, epidemics, incurable disease, climate change and the countless more. What does this mean? Does this mean that we too are a consequence of something just as random, and our reason merely an elaborate produce of natural processes in our naturally grown brains, and our life an extraction of things that happen without any good overall plan or reason.
Then if we look at our individual lives, we find ourselves constantly at odd with various problems and dilemmas of personal. We come here alone and leave alone. We live our lives we endure hardships, try to cope with situations of life picking up shreds of happiness here and there. This is such life that if we had not had the reason of our faith to bridge the gaps in our understanding and the light of hope to show us the way, to encourage us, to spur us on, we would be miserable, completely at the mercy of circumstance, possibility living like animals, or living not at all. The questions we have we would not be able to live with without certain amount of faith in our hearts and minds. We would not able to build our reasonable constructs of knowledge if it were all reason.
Then to answer your question, I would say that there is no reason in the happenings of everything, and if there is one, then that reason is certainly beyond our ability to understanding and comprehend. What for instance is the reason for the creation of life, the existence of the universe and the being of everything. As if there is some grand design or some grandiose scheme of work behind the happening, nay, even before that, the being of everything then that we cannot possibly know, we ourselves being but a meagre part of that everything.
The reason therefore is completely human concept of the mind, something that we seek in life, something we learn from experience, something we develop through our concerted efforts in life - we extract then infuse reason in our world. As for instance when we find a decent patch of land, of fertile soil, but full natural growth of weeds and shrubs, we first see it useless for our human, as of growing crops, but then we bring order into this chaos.
Everything in life remains just like that patch of land, or life, natural, random and chaotic, but within that randomness and chaos we find possibilities of new order and new meanings. Then if all were reasonable fixed in life, we would not be able to progress or develop, and our presence, without opportunities to improve in life, would be meaningless.
I think we are the sense of our world. We find our own good reasons in everything.