Keeping them as pets, pigs are cute and charming but they realize that a pig goes from weighting 1kg to 300kg in matter of 4 years, right? What are you going to do with that in your apartment or in your house? They like to lift up the grass and play in the mud and if you own a pool, god help you.
I'm starting to think people are getting exotic pets without being fully prepared for them. I posted once a comparison between one of my young pigs and a 6L bucket. What do you expect to do with a 2m long, 400kg weighting pig?