Pig farmers are subject to the 'pig cycle', an important factor element of agricultural economics. http://www.tlcpiglets.com/teacuppigsforsale.htm It goes something like this: pigs are unsubsidised - the us government doesn't 'help' producers just by buying surpluses or fixing prices in any other way, for example, so, when there's not much pork around prices are generally good - good prices attract people into the industry, and so more pigs become available on the market which means that customers can look for the cheapest, which drives pigmeat prices down - lower prices means that producers make less money from their pigs, and in an industry with nominal margins (difference between the cost of producing something and the amount you are paid because of it) low prices easily force people to sell up - which in turn leads to reduced supply and for that reason increasing prices which again attract people back up in pigs. They can even be trained to use a litter box, and if kept outside will generally comply with going toilet in one corner of your yard.
Disadvantages:

Finding a vet who knows about taking care of pot bellied pigs may be tricky. Although they are quickly gaining in recognition, they are still quite unusual pets, and most family pets will not know how to properly care for them.
Pigs root. This is their natural behaviour and you ought to not try to discourage it. Rooting allows them to get essential nutritional vitamins from the soil, and from worms and acorns that they eat. It does mean that a pig is an unsuitable pet for those who have a beautiful lawn, nevertheless!
Their high intelligence means that pigs require a whole lot of attention. If you leave them on their own in the house often then you're apt to find your carpet rooted up, your houseplants scattered along the floor, etc. You can't criticise the pig for this purpose: they're intelligent and societal animals, and need stimulation.
A pot bellied pig can make the perfect family puppy, as long as you seek information. Being the only person inside your neighbourhood to own a pig is very cool, but also means that there's no one to turn to for advice. Make sure you read up on the subject, and your pig will take you nothing but good times!
.
Micro or teacup  pigs are the latest pet trend to sweep united kingdom and America, why would anyone want a porker as a pet you may well ask yourself.

Over recent times keeping small pigs as pets has become hugely popular. The trend came about in the 1980s in the form of the miniature Vietnamese Potbellied This halloween. Within a few years this exotic little animal had skyrocketed to movie star stardom and was for a time the most "in pet" to own.

Miniature  pigs  are generally healthy and robust and live typically between five and fifteen years, although along with the correct care and eating plan many endure beyond this.

They are becoming more and more domesticated with every age group enjoying human contact from your young age and easily adapting to new environment, they have a strong constitution and few ailments when compared to most pedigree dogs today.