It is a sad fact that the nation has moved so far from the founders vision that the constitution is all but null and voided. Some of us would like to arrest the slide into tyranny that is well under way. Others appear to be members of the George Bush (can do no wrong) personality cult. If you are a conservative then appointing stealth/crony to the supreme court would upset you. Particularly when there are many many many good conservative candidates available.
One theory gaining popularity is that Bush wanted to spit in the eye of conservatives that undermined support for Gonzolas (another crony) just to piss them off. Mission accomplished W, you managed to split the GOP base and piss off most conservatives, way to go!
If you truly believe that President Bush would nominate someone out of spite then I very much doubt that you have EVER supported him, in which case your entire argument would be completely irrelevant as there is nothing he could ever do that would make you happy.