I am a member of the "Eat Your Crusts" generation. I was always told to eat my crusts. As though crusts are a requisite part of a meal, like all the vitamins and nutrients in bread somehow all end up in the slightly over-dry, no-jelly-on-the-edge crusts. To this day I don't eat all my crusts. I'm not anti-crust per se. I just don't see the importance of them.
Why pick a fight with my kids over crusts when there are much greater nutritional battles to fight? I can wage war over eating vegetables or having 'taste bites' of a new food, but I'm not going to waste my time and energy on crusts.