Most of the world's dualists are substance dualists who believe in a soul, not property dualists who believe in qualia. Attributes of thought, like the ones that you list, may play a part in cementing the idea that mind is different from matter. But the belief in life after death, and survival of the self despite death of the body, must play a huge psychological role. If you can live on even when your body is gone, then you must be some other thing that still exists. Thus the soul, and thus dualism.