I have a friend who can't have butter-butter in her house because her boys can't have it due to allergies. As for me, it depends on the type of bread I'm eating - if it's just a regular sandwich, then I use marg, but if I'm having baked-fresh-that-day crusty loaf, then it's butter all the way LOL. And I only use butter in cooking too - marg just doesn't cut it.