Exactly, nothing wrong with simplicity if it's well done.Oh my, those do sound dull. I like simple sandwiches, but not boring. And margarine... yes, ugh.
A good french baguette, sliced, with some good prosciutto or jamon, some good cheese, and perhaps a French Dijon or German stone-ground mustard is simple, but tasty. I have had that for lunch many times. Simple, but not dull.