If only "mini-pigs" really stayed mini. If they could develop a breed that would top out at 20 or 30 pounds, I'd consider owning one.
Binro the Heretic I grew up around farms and livestock of all kinds. Pig shit is the worst smelling shit on the planet. It's an odor you can actually FEEL as it swarms through the air around you.
Pigs are really smart, full of personality and, when they're small, very cute, but they quickly grow into ill-tempered juggernauts of meat and bone.