Short answer: Wodehouse's comedic writing provides the perfect means of ridiculing all that which is too self-important and threatening in ignorance. The works of P.G. Wodehouse also serve as a means of celebrating the most important things in life, which frequently happen to be the smaller things (please pardon the cliche). Perhaps most importantly, the House of Spode is an attempt to celebrate the good and ridicule the bad without actually becoming arrogant of our accord.
For the longer answer (which eloquently argues the genius of Wodehouse), I'd like to draw your attention to this short essay by C.A. Wolski.
The typical Wodehouse hero is an Edwardian aristocrat of the idle-rich set who is surrounded by nuptial-mad girlfriends, domineering aunts, soft-headed friends, and phlegmatic butlers-whom they rely on to get out of the jams caused by the girlfriends, aunts, and friends. Plots revolve around the hero trying to extricate himself from an engagement to some horrible young thing, being blackmailed by an aunt into petty (but harmless) larceny, or helping a friend get out of an engagement. In some cases, a bit like a comic Job, the hero is set upon by all three situations at the same time-while never losing his verve or wit.
It is easy to dismiss Wodehouse's work as fluff, considering that the plots revolve around characters stealing cow creamers and prize pigs and trying to escape the clutches of soft-headed girls and menacing, officious romantic rivals. Wodehouse himself described the way he wrote as "making a sort of musical comedy without music and ignoring real life altogether."
But there is more to Wodehouse than meets the eye.
Though the reader can't take Wodehouse's plots literally, his absent-minded baronets and young men in spats are, in their own way, serious about the values they're pursuing. The comedy comes as much from the trivial values being pursued (cow creamers, prize-winning pigs, antique golf clubs) as the wrong-headed ways in which they are pursued (petty larceny, blackmailing by means of embarrassingly ridiculous secrets, kidnapping of willing victims and prize pigs). But these characters, for all their lunacy, are serious about what they want and what drives them.
