Whats so wrong with matchy twin names?

Just to clear it up, there isn't anything wrong with matching twin names. I have twin cousins, Justin & Jared. They are identical but never get confused b/c they are so different in personality. Names don't define a person, so I don't think it matters if it matches or not. Plus, I married a twin, and he and his brother have matching first AND middle names (Sean Samuel & John Daniel) and they have absolutely no problem with it. They never have. If the kids don't mind, and if they can have their own identity even with matching names, I don't see why some people get their panties in a bunch over matching names.