It pleased the Lord to bruise Him. He has put Him to grief. Jesus did not heal ALL the sick people of His day. But He never turned anyone away. When a sick or possessed person was brought to Him, He healed that person.
Women still suffer pains at childbirth.
The ground still brings forth thorns and thistles. Mankind toils and sweats. The present age brings suffering. All creation groans. The Lord chastens those whom He loves.