But when he was yet a great way off, his father saw him, and had compassion, and ran, and fell on his neck, and kissed him. And the son said unto him, Father, I have sinned against heaven, and in thy sight, and am no more worthy to be called thy son. The pigs represent the demons, and when he saw what he was into, he realized that even the servants in his father's house were better off than the pigs there. He returned, not realizing he was always welcome home. In the old testament pigs were something you would avoid, not eat, not even touch, they were unclean animals.
Demons are the pigs of the new testament.
As the son was led from the fathers house by desires of the flesh, he found himself in the middle of the pig pen. Yes, of course He does, but it is up to us to allow them to stay or make them go. You should be. I was when I realized this was true. I continue to do so and rebuke it.