The saints, true saints, have a different perspective on suffering than us 'mere mortal' Christians. Saint Padre Pio said that only through suffering can our soul say with certainty that we do love God.
Does any one of us truly seek suffering? Suffering comes our way in living our life with all the bad moments. Some suffering continues for years, especially with the loss of a loved one to addiction or disease.
It could be that saints are given a gift of more tolerance for suffering. When trials come which cause suffering, this may be God's chosen method to prepare us to become more like the saints and martyrs.