What if the most logical explanation as to why a concious mind exists—on any planet, is to suffer? Suffer, however, based off our more fortunate standards specifically: to suffer the—what we would consider—"pains" of things like inconvenience, discomfort, misfortune, and displeasure.
Its the incessant indulgence in these things that lead a concious mind to be completely blind to the woes of such, thus the compassion and ability to empathize that comes with the experience (or knowledge) of suffering. It's hardly just an "eye for an eye"—the inherent need for ourselves to retaliate due to being concious of ourselves—that leads the world to be blind, it's our sense organs reacting to our environment and any desire for ourselves conjured from this reaction that is the most blinding; it's this that leads to the vanities we imagine in our heads, that we end up revolving our lives around, and make most important, that leads away from the "true life" a life of selflessness has to offer: a life most lived in the present, opposed to stuck in our heads, the images of what we consider the pain of our "past" and the thirst or fear for the "future" (our sense of time being yet another consequence of consciousness—like selfishness) dominating how we feel today.
It's our sense organs reacting to the extent we've presently manipulated our environment that leads to an addiction to it, even happiness, to the point where we become convinced that it's even lifes meaning: to become as happy as possible, but when we make our highest happiness the satisfaction of our greatest desires, we're only lead to an inevitable, massive disappointment, due to all exploitation of desire only being temporary. This begs the question: out of all the desire, and vanity that's bred from it, would there by any that don't end in inevitable disappointment due to being temporary? Love—but not Disney World kind of love, no, the Gandhi, MLK, Leo Tolstoy kind: selflessness—is the only desire that not only holds the ability to potentially last as long as man does, but also doesn't lead to inevitable disappointment. Dare I say: it's what the idea of a God or creator of some kind (not any man made God, but the substance of them)—its will: selflessness, to even it's extremes like self-sacrifice, that is the only desire worth seeking. But if you're someone against the idea of a God or creator (good luck finding the will to be selfless to the extremes) then let the fact that we're the only living things that have ever existed (on this planet, as far we know) that can even begin to consider abstaining from itself for any reason at all, be enough.
It's this that would end all suffering, but not by ending it, but by normalizing it I suppose you could say; to suffer for the sake of selflessness. To take the empty, ultimately only disappointing desire of stimulating our sense organs and fulfilling our vanities—for the sake of ourselves, and replace it, with the logic and alternative perspectives and behaviors that our inherency to selflessness breeds, that comes from our inherent ability to logic and reason.
What if we're designed to not be comforted or pleasured incessantly? Just look at the rich, most upper to lower middle class, even the poorest in a nation crippled by convenience; people of fortune (in life or in wealth) in general (like me): obese or crooked in some way or another, the idea of their temporary lifestyle they've become so attached to no longer being an avenue to being comforted and pleasured, saps or corrupts their concious mind, to the point where their willing to even kill to keep it—in some cases. Could a life of abstaining from your sense organs, and teaching yourself to thirst, desire and fantasize for the least, be what ultimately leads to a life of the most?