I think pigs are adorable! I would love to own one as a pet. I've just heard unfortunately how destructive they can be.
As for the mini/micro sized piglet, those are unfortunately a huge scam. Micro piglets are generally just baby pot belly pigs. They are underfed and sold really young to keep the appearance of "micro". There's a ton of horror stories on the web of people purchasing what they believe to be micro piglets and having them grow full size as they age without a clue what to do with them. It is quite a sin. I wish people would do more research on pets before investing for cuteness sake.