Article: "5 Reasons Muslims Convert"

From Christianity Today:

1. The lifestyle of Christians. Former Muslims cited the love that Christians exhibited in their relationships with non-Christians and their treatment of women as equals.
2. The power of God in answered prayers and healing. Experiences of God's supernatural work—especially important to folk Muslims who have a characteristic concern for power and blessings—increased after their conversions, according to the survey. Often dreams about Jesus were reported.
3. Dissatisfaction with the type of Islam they had experienced. Many expressed dissatisfaction with the Qur'an, emphasizing God's punishment over his love. Others cited Islamic militancy and the failure of Islamic law to transform society.
4. The spiritual truth in the Bible. Muslims are generally taught that the Torah, Psalms, and the Gospels are from God, but that they became corrupted. These Christian converts said, however, that the truth of God found in Scripture became compelling for them and key to their understanding of God's character.
5. Biblical teachings about the love of God. In the Qur'an, God's love is conditional, but God's love for all people was especially eye-opening for Muslims. These converts were moved by the love expressed through the life and teachings of Jesus. The next step for many Muslims was to become part of a fellowship of loving Christians.

A "sixth" reason that I often hear is the "Fatherhood of God". Islam teaches that Jesus Christ is not divine, and so God is not Father in relation to his Son. Subsequently, God cannot be said in any meaningful way to be our father, either. Knowing the paternal love of God the Father can help non-believers accept the revelation of God's Son.