Why did Ignatius Loyola form the religious order of the Jesuits?

Soon after he experienced visions, but a year later suffered a trial of fears and scruples, driving him almost to despair. Out of this experience he wrote his famous "Spiritual Exercises". Many first hated St. Ignatius because of his humble Lifestyle. Despite this, he attracted several followers at the university, including St. Francis Xavier, and soon started his order called The Society of Jesus, or Jesuits. Their mission always link to convert those who were far from the Catholic church.