I see no reason to believe that a Benevolent God who watches the sparrow could stomach the immense wasteful suffering and death on Earth. Many of them children. For some this is not a problem but for me I think it is a problem. I feel like the answers never rise to the questions. Epicurus argued this long ago.
 "Is God willing to prevent evil, but not able?
Then he is not omnipotent.
Is he able, but not willing?
Then he is malevolent.
Is he both able and willing?
Then whence cometh evil?
Is he neither able nor willing?
Then why call him God?"
— Epicurus

Usually the answer is free will but then the problem of determinism comes up. Much of life is determined by accidents of fate. Where one is born, what culture, what time, what people they happen to meet, and many other variables that make free will just another part of the equation. And of course there are natural disasters and animals suffering as well.
Then this usually gets to the "fall of Adam and Eve" but then questions of whether one should be judged on their forefathers and previous generations comes up as a problem. In human courts it would be an injustice to punish a child because their parents broke the law or even worse because their great great grandparents broke the law. That would be unjust.

Darwin made this argument how natural evolution makes more sense with the immense suffering than a benevolent God.
"That there is much suffering in the world no one disputes. Which is more likely, that pain and evil are the result of an all-powerful and good God, or the product of uncaring natural forces? The presence of much suffering agrees well with the view that all organic beings have been developed through variation and natural selection." Charles Darwin

Death is built into life. Nature is telling us something and it is NOT that we humans are the center of the earth much less the cosmos. No one makes it out alive-Security on earth is an illusion and so is the myth of eternal security after this dangerous one-live now. Humans have evolved from the Earth's relative stability but this can change as many other extinct species point to. Even in this relative stability many humans have died due to natural disasters and if you escape that fate all humans must face the demise of the human body because we live on a planet that does not blink when we face the end. The Earth is beautiful AND dangerous. It makes it that much more beautiful with the realization of our finite fragile lives on this tiny planet that as Carl Sagan stated exists in the universe like a mote of dust in the morning sky.

Theists speak of a "privileged planet" and ignore the volatile planet that is designed with death. Of all species that have existed on Earth, 99.9 percent are now extinct. Many of them perished in five cataclysmic events. The Earth can go from a "privileged" planet to a dangerous planet in its history and in its future. Death is part of the "design". Humans have been around for just 200,000 years and should keep in mind its frailty on this rare and at times volatile earth.

Romans 1:20 - For the invisible things of him from the creation of the world are clearly seen, being understood by the things that are made, even his eternal power and Godhead; so that they are without excuse:

If God is to be understood through nature it is hard to see the Christian God as being conducive with that God construct.  Charles Darwin used one family of parasitic wasps as evidence for natural selection, writing to a colleague: "I cannot persuade myself that a beneficent and omnipotent God would have designedly created the Ichneumonidae with the express intention of their feeding within the living bodies of caterpillars."
Many species of wasps lay their eggs inside caterpillars. To make this possible, the wasps' have a secret weapon in the form of a dose of virus-like particles that are injected along with the eggs.

Not only do these disable the caterpillars' immune system to stop it attacking the eggs, they also cause paralysis and keep the host from pupating - turning the caterpillar into an eternally youthful larder and nursery for the wasp grubs. (Source The New Scientist)
In the picture a parasitic wasp lays its eggs into a caterpillar, at the same time delivering a hybrid virus.

"That there is much suffering in the world no one disputes. Which is more likely, that pain and evil are the result of an all-powerful and good God, or the product of uncaring natural forces? The presence of much suffering agrees well with the view that all organic beings have been developed through variation and natural selection."
Charles Darwin

"I do not understand where this "beauty" and "harmony" are supposed to be found. Throughout the animal kingdom, animals ruthlessly prey upon each other. Most of them are either cruelly killed by other animals or slowly die of hunger. For my part, I am unable to see any great beauty or harmony in the tapeworm. Let it not be said that this creature is sent as a punishment for our sins, for it is more prevalent among animals than among humans. I suppose the questioner is thinking of such things as the beauty of the starry heavens. But one should remember that stars every now and again explode and reduce everything in their neighborhood to a vague mist. Beauty, in any case, is subjective and exists only in the eye of the beholder. "
Bertrand Russell

There was no pre-death biology. Death is built into the system of life in the Universe. The Biblical account claims there was a fall from immortal to mortal. Life is mortal. The reality of the human condition is right there to say for anyone who will take a stroll into your local hospital. These bodies were never immortal. They are part of the Universe which itself is dying on a much larger scale.