In the scheme of things suffering is only a part of our lives. I believe the human race is still in an unevolved state. We may have millions of years of evolving to do.
The spiritualist medium Ursula Roberts used to give trance lectures and a spirit guide purportedly spoke through her. I heard him once say that the level of evolution of the human race at the present time was the equivalent of Kindergarten.
I think I can say I have had my share of mental suffering, but it has not made a cynic out of me. I can still see the positive side.
Wars may be terrible and involve much suffering, but they also created a bond of brotherhood between soldiers who are ready to sacrifice themselves for others, and for their country. There is much courage, and comradeship, and mental strength developed in wars.
I remember a line from a film about the Alamo, in which one of the defenders is shooting down many advancing soldiers, and he turns to a man next to him and says.
"speaks well of men that so many are prepared to die for what they believe in, speaks well of men"
It is possible to see goodness even in dire events. Such things force changes in our souls, whereas idling away in paradise would be stagnation.