Pile of Stuff at the Bottom of the Stairs

Mary doesn''t know what makes her angrier - the way he doesn''t quite reach the laundry basket when he throws his dirty clothes at it (but never walks over and picks them up and puts them in), or the balled-up tissues he leaves on the bedside table when he has a cold, or the way he never completely empties the dishwasher, but leaves the ''difficult'' things for her to put away. Is it that because ...