Jesus restored many who were crippled and not only because of a physical disability but also more importantly forgave them their sins. Even more important he passed that incredible and amazing power to His Apostles.
One striking example is the paralyzed man. Did you notice Christ first forgave his sins and only later dealt with his physical disability?
He came to heal us both physically and spiritually.
Having said that He choose not to end all evil / suffering / injustice so that we may also exercise our charity and show our good work for the glory of God and to set an example to our fellow humans.
If you look closely in His Cross He reversed the greatest curse humankind had : our fall from grace because of the original sin. He therefore opened for us the possibility of attaining Heaven, where no more evil / suffering / pain exists, only pure joy, happiness and love.