Eh, it wasn’t bad as a revenge fantasy. You might like it if you enjoy thinking about how all the people who don’t appreciate you would be screwed if you just left. The political philosophy being proposed won’t be too offensive if you already lean libertarian.
My main objection to the book (other than the infamous speech, which I admit I couldn’t read all the way through) is that it’s a sort of morality play with with exaggerated good and bad and no shades of gray, but it keeps denying this and insisting that the real world really is that black and white. The reader ought to take it with more than a little pinch of salt.
Oh, and that Ayn Rand’s self-insert has a BDSM fetish I really would have preferred not to know about. (Why do authors keep inserting their kinks into books? I’m looking at you, Robert Jordan. And especially at you, Piers Anthony.)