Death by a thousand cuts?

So the proposal is that smoking should be banned in public parks.  It is of course already banned in public places indoors, and there are constant calls for it to be prohibited in cars and houses where there are children present. Which of course raises the question - just where can you smoke these days?  And is this the real strategy - to make smoking illegal by the back door as it were, by restricting, bit by bit, the places where you are allowed to smoke, until there's nowhere left?