Pet as Food?

There's an episode of the The F Word shown in the Asian Food Channel in Astro recently, where 2 pets (which are pigs) of Gordon Ramsey was slaughtered and cooked as food instead. Since these pigs were pets, they were given names as well. In fact, his children are happy when eating the pork and knowing that it was their pets. I'm not sure whether this should be a normal reaction, feeling happy of eating your own pets after loving and taking care of them for so long.