With Rhaegar, there's different perspectives on him. In the north and at Dorn, he is seen as a kidnapper, rapist, killer, and one who didn't care for the well being of others, including his wife. Many died because of his actions.
Whereas those that knew him, say he was kind, gentle, hated fighting, an intelligent man and was loved by his soldiers and people.
Different perspevtives and all that