Speaking of addiction, I suspect that relinquishing ideologically-induced moral outrage is actually harder than getting over many chemical dependencies (although I don't have any experience with the latter). At least with a drug, it's simple enough to draw a bright line around actions you're not supposed to do anymore; you can try pouring the contents of the liquor cabinet down the drain, or signing a commitment contract to not buy or borrow any more cigarettes.
But when one of your most strongly-held beliefs (strongly-held in the sense of emotional relevance, not actual probability; I'm very confident in the monotone sequence theorem, but the truth of its negation wouldn't be a blow to who I am) turns out to be false—or if it still seems true, but it turns out that being continually angry at a Society that disagrees isn't a good allocation of cognitive resources—what do you do then? Turning your life around from that isn't anything as straightforward as preventing specific chemicals from entering your body; you have to change the way you think, which is to say excise a part of your soul. Oh, it grows back—that's the point, really; you want to stop thinking non-useful thoughts in order to replace them with something better—but can you blame me for having a self-preservation instinct, even if my currently-existing self isn't something that ought to be preserved?
But then, blame or the lack thereof isn't the point.