It will happen eventually - smoking will be banned, other than in the smoker's own home. The most powerful force for change is always public opinion, and public opinion is moving inexorably towards favouring a total ban in public places.
All well and good banning it completely but!! Where are the rights for the smoker? The non-smoker is favoured all the time. Smokers have the right to smoke if they choose. You will get more pollution in your lungs from the everyday smog and gases pumped out by industry and vehicles. This will cause a big stir if it is tried here. It's like telling folk that they cannot breathe out because of all the carbon dioxide we produce from breathing. (no I do not smoke)
I like yourself and everyone else in this country have the right to eject waste products (solid and liquid) from my body. But, and it is a big but, I do not have the right to cover anyone who happens to be near me at the time with my waste products.
I am a former smoker who gave up over thirty years ago and will support smokers in their right to smoke but only if they do not unilaterally force others to share their habit.
Quite right, I hate having to run the gauntlet of foul smoke as I enter any building since they were forced outside.
As for smoker's rights being trodden on, think of it as the non smokers getting their own back for all the decades of having to suffer smoker's rights whilst being trodden over in opium den type conditions!