It may be that this mortal existence is the only flash of eternity where we are allowed to have a veil over our minds and are allowed to experience incompleteness, pain, and sorrow, which give us such richness of experience. From this view, then, perhaps feeling lonely would not be seen as a disease condition but rather as one of the very purposes for being alive.
Pain, sorrow, suffering, and evil, then, may not be deficits to be overcome, controlled, removed, or eradicated, but rather they may be gifts from a benevolent Father that can serve as instruments for developing a divine nature. We may perhaps go so far as to see the traditionally tragic elements of life as the very tools of the trade in the construction of heavenly mansions.

Tragedies do happen. We can discover the reason, blame others, imagine how different our lives would be had they not occurred. But none of that is important: they did occur, and so be it. From there onward we must put aside the fear that they awoke in us and begin to rebuild.

A single death is a tragedy; a million deaths is a statistic.

Could the Lord have prevented these tragedies? The answer is, Yes. The Lord is omnipotent, with all power to control our lives, save us pain, prevent all accidents, drive all planes and cars, feed us, protect us, save us from labor, effort, sickness, even from death, if he will. But he will not.
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If all the sick for whom we pray were healed, if all the righteous were protected and the wicked destroyed, the whole program of the Father would be annulled and the basic principle of the gospel, free agency, would be ended. No man would have to live by faith.

If joy and peace and rewards were instantaneously given the doer of good, there could be no evil—all would do good but not because of the rightness of doing good. There would be no test of strength, no development of character, no growth of powers, no free agency, only satanic controls.

If we looked at mortality as the whole of existence, then pain, sorrow, failure, and short life would be calamity. But if we look upon life as an eternal thing stretching far into the premortal past and on into the eternal post-death future, then all happenings may be put in proper perspective.