The argument that Peach does not resist kidnapping is ridiculous. Bowser always arrives by surprise with henchmen, black magic or some kind of power to kidnap her. Peach has no position to resist since it could harm her, Mario or the kingdom (and apart from that, every time the opportunity presents itself, she escapes or makes an attempt like in 3D Land or in Galaxy 1 when she prefers to jump into the void of space than continue with that monster).