Oh gods yes. I have some sympathies for both of them, to be honest. Zack, because I hate housework myself (although not quite to the point of full-on squalor); Nesa, because I hate having to deal with the results of not doing housework. I figure Zack has a bad case of "single bachelor syndrome" along with the additional complication of "only child" making it tricky for him to understand why the housework fairies haven't come to help out.
(Of course, advanced squalor is often an indicator of some serious psychological problems; particularly if it's the sort of squalor which is accompanied by hoarding behaviour and similar. In those cases, it doesn't matter how much you clean the house; in six months, without some treatment, you're going to be back where you started.)