Two of our Kune's were originally sold as micro house pigs to their original owners. Luckily for them, they ended up with us leading proper piggie lives. I do know our the biggest one was owned by an alcoholic lady who used to take him to bed with her
I guess it takes all sorts. Anyway, he seems to have reverted to Piggie lifestyle very well!
I think much of the problem with pigs as house pets is that when people hear micro pig they think "Babe" size and staying that size. Most people have never actually stood next to a commercial fully grown pig of any breed to see how enormous they really are. They don't understand that Kune size is actually relatively small for a pig!