Had roast pork with my parents last week, turned out my dad had trimmed the pork fat and thrown it out instead of making it into crackling.

Reasoning: it is just fat and therefore it's bad for you. I tried to argue it was probably one of the healthier parts of the whole meal, but the fat was already in the bin.

Afterwards we had a choice of sugary desserts, manufactured on an assembly line. Supposedly they weren't bad enough to warrant being thrown out...