Something on another thread made me think of this.
I was one of a very big family. My mum always cooked lovely home made meals.
Occasionally my dad (and sometimes my mum) would have different food to us. For example, they might have chops, when we'd have sausages. We loved sausages but we would have loved the chops, too. But when you have a very large family, how can you afford lamb chops for everyone? Half of my siblings were boys and ate a lot, too, so you'd be talking about three chops vs three sausages.
I never felt deprived because my dad had chops when I couldn't. It wouldn't have occurred to me. Similarly if he had Stilton and wouldn't let us taste it, I didn't feel deprived. Envious for quarter of an hour, maybe, but not deprived.
Now in my own family there are some things I like, eg fresh anchovies, which on the one hand I'm lucky my children won't eat anyway, but on the other I wouldn't want to pay for for all of us.
Obviously this is a financial issue. Given the money, my mum would have fed us all organic lamb chops morning, noon and night.
But if money is an issue, is it wrong (as many suggested on the bacon thread) that the children shouldn't eat what the parents eat? Shouldn't there be some privileges for being adult? (And of course I'm not suggesting children go hungry!)