They suffer because they feel empathy for their friends and relatives who hurt. They suffer because mankind is blotted and stained. They suffer because they grow old, because they lose their sight, their hearing, their youth. They suffer for their weakness and mistakes. But through all of their suffering, if men and women turn to God, striving to do His will, the suffering becomes a mechanism which helps purify one's personality and conscience.
Religion can produce bigots in every denomination.
A bigot is someone who is intolerably convinced that he or she is right. Often bigots are not honest, that is, they won't call a spade a spade. They become intolerant of anyone or anything that threatens their point of view. While they claim to follow Christ, they become great practitioners of mental coercion. Great men and women are around us.