I have piggies too, they make lovely pets. So gentle and cuddly with their own characters (just like big fat lazy hamsters that love to snooze and eat
)
They're expensive (cost a small fortune in veg and other supplies) - but they're definitely worth it.
Piggies are naturally shy (i.e if they're in a run, they might run away when they hear you approaching) but once out of the cage - they're lovely.
Mine will be 5 in April, I've had them since they were 6-8 weeks old. Woah, time fllies.