To me, the vulgarity in the novel was not its language. What truly makes me cringe -- the most vulgar and obscene things in life -- are humanity's ubiquitous displays of unrelenting greed, hatred, intolerance, and the unquenchable need of people to make war.
It would appear that there is a "dose" of swearing that works best. If you swear too much it reduces its benefit, but if you do not swear at all, you may not have as a high a pain tolerance. Swearing seems to have a protective effect -- to a point.
I appreciate the occasional well-meaning attempts to find sanitized alternative terms that preserve some of the flavor of the old standards, but sometimes there's just no replacement for le f-mot juste.