We will distrust God if we expect him to make life fair.
Life is unfair because we are surrounded by the adverse consequences of wrong choices made by others, from Adam and Eve to those currently in our orbit.
Conversely, our mistakes contribute to the unfairness in the lives of those within our sphere of influence.
To make life fair for everyone, God would have to restrict or override our will and that of others. However, he is unwilling to do so because he respects our volitional freedom.
God could also protect us from unfair suffering by taking us to heaven immediately after our spiritual rebirth.
Instead, he leaves us on earth to do good works in his name, thereby drawing people to him and making life better for future generations.
Unfair suffering is inherent to our natural habitat. We can no more avoid it than fish can avoid water.
But just as God has given fish the physical ability and natural resources to live comfortably underwater, he has given us the spiritual ability and divine resources to live contentedly in this unjust world.
