Why do 'vegetarians' like bacon?

NPR explains all:

'Recently, an old friend who's been a vegetarian for more than 15 years shocked us with a story: Last weekend, she ate bacon. Several strips. Straight out of the frying pan where her boyfriend was cooking it.

This wasn't the first time she'd encountered it sizzling there, in all its glistening glory. But for some reason, this time it overpowered her. She was guilty yet gleeful when she told us that she'd allowed bacon back into her life.

But she's not alone. We've heard this story before from many people. It seems that bacon has a way of awakening carnivorous desires within even some of the preachiest of vegetarians. And we set out to find out why.'