Well the universe and everything in it has physical laws. As a Catholic I interpret the origins of such things differently than most, but I believe in those laws with a high degree of confidence. If a child dies to a disease or a city is destroyed by a meteor, yes there is a "technical reason." Perhaps in the child's case, genetics or random infection that even diligence was unable to prevent. In the case of a meteor, while our scientists may have not been tracking it previously and thus not really able to discern its origins or what set it on its path, some real action sent it hurtling toward that town.
But as a Catholic I also do not believe in "spiritual reasons" or "deep reasons" for things. Free will and the physical universe we inhabit have tons of moving pieces. Sometimes those pieces slam into people and destroy them, through random accidents, random violence, etc. One of the world's most accomplished marathon runners fell dead one day in his early 50s, he had severe blockages in his heart. Despite being under the regular care of a physician, the patient did not present ordinary symptoms (perhaps his extreme exercise in some way helped compensate for the blockages as they built up in parts of the heart, making it harder to detect), and he died. My brother died in his 40s of an aortic dissection, which is considered wholly fatal if it happens anywhere other than on an operating table or in extremely close proximity to one. They can develop in hours sometimes with no prior symptoms and are thus almost virtually unpreventable. In rare cases signs of an imminent dissection might be found, but that's very, very rare.
In the human body there are many faults that can develop overtime that progress to very rapid death and whose causes are not known to be related to any active lifestyle choices or linked to any known genetic disorders. Basically, sometimes parts of your body maybe just didn't form quite right, and one day they fail and you die earlier than most would consider normal. Pete Maravich was born without a left coronary artery, and he was a professional basketball player. His right coronary artery was much enlarged and apparently had grown very strong and big through compensating over the years. Enough that the guy could excel in a very demanding athletic endeavor, but Maravich's clock eventually ran out and he collapsed in a pickup basketball game and died at age 40. Prior to his death he had no symptoms whatsoever, and as a professional athlete he received closer scrutiny from doctors than many would at a similar age. But unless we basically do full body MRIs in addition to angiographies and a host of other tests there is very little anyone can do about most of these non-symptom producing problems. Even with those tests sometimes the problem is undetectable. My grandfather had a cerebral angiography which is exactly one of those tests that can help diagnose and prevent things that are going to turn into larger problems, but in his case, and this is a very rare but known side effect, his angiography caused an embolus to form which lead to stroke. Luckily it did not kill him, but it had negative effects on his cognition and quality of life, it easily could have killed him. So even doing all this aggressive testing can sometimes kill you while you had no underlying condition at all.
But I digress, yes everything has a technical cause, but "spiritual reasons the universe has certain events" are hogwash mostly. I do not believe aside from extraordinary instances that God communicates by randomly say, killing one child so another might live or something like that. I'm aware of the histories of the saints and miracles in the bible, but that's not a typical relationship between God and mankind. But I think for many people they have to believe things are meant to be or that there are reasons for things, because they simply can't handle the alternative. For them it is a coping mechanism for something they simply cannot handle otherwise, their assumption is everyone needs those same coping mechanisms which is why they say such things to other people.