If the obtuseness, aggression and sheer bad manners of a number of those posting to this thread is repeated in their driving (as seems to me highly likely) then I, for one, have no desire to meet them on the road (and probably not elsewhere either).

Being civilised entails obeying the agreed laws, including the ones with which you disagree. Any person has the right to assume that others will observe the rules. He would be spectacularly dumb to rely on it, of course, but has the right to protection from those who feel that they are above the law.

BTW, the motorways are there for commerce, and also for any other legitimate use, including pleasure however improbable that may be.