Ex smoker here.
I began smoking at 16, in my first Saturday job, at a shoe shop, because (without exception) everyone else I worked with had significantly more breaks than me. I raised the issue with my boss who said "you know what the answer is" and offered me a smoke. That was the early noughties.
I smoked all the way through uni and much of my twenties but began to curtail the habit after the government made laws that directly affected me. The most effective control they brought in was around my 30th birthday: the total and complete removal of 10 packs. I would still buy 10 packs for nights at the pub. The perfect size to smoke for 6 hours and then not smoke again until next Saturday.
(Eventually it was starting a family that knocked smoking on the head for good though.)
Recently, I have been offered cigarettes at parties and other events and had no problem politely declining, and so I know I'm done. And it is such a relief. I found quitting really, really hard. I was never a heavy smoker but I was a consistent one. Marlboroughs on pay day. Amber leaf rollies by the 25th of the month. And always, always when I had a drink.
I think what is often forgotten when we talk about these complete bans is that quitting is so hard. People "know" that it's hard, but unless you've lived it or lived with someone that has, it's hard to really quantify. It's so much more than just "a lack of willpower". Smoking becomes a part of you, like needing a wee when you wake up.
For many years the NHS and government focused a lot of time and resources on cessation. (And I tried much of it - patches, little white pens that hum when you "inhale". Everything just made me want a smoke more.) Smoking cessation, in a world where cigarettes are still available and especially if you hang around with people and in places where smoking is "normal".
I regret that first cigarette, (even as a person that likes to say "oh I don't have any regrets" in that serene way, when asked.)
I have absolutely nothing against the smoking ban. It will save us more money that it costs us. It will save more lives than we can even metricate. Our children's children will be the first generation to grow up barely even knowing what a cigarette is. No longer a real thing but some arcane symbol from the Patty and Selmer of yesteryear. What is more, they will never be the children who have to go to school in yellowed shirts, smelling like an ashtray.
One final thing - for the sake of our NHS, they simply cannot legalise cannabis whilst tobacco is legal. And, whatever your views on cannabis, legalisation is happening every year in other countries across the globe. There will be plenty of tax in marijuana.
Alcohol and cannabis are not adequate comparisons to make to smoking. It's a different part of you that says "let's light up" - something deep and innate. And, whilst I have no doubt that and alcoholic's emotional response to alcohol is similar to that of a smoker's response to nicotine, it is not the norm. Most people that drink are not addicts. Most people that smoke are addicts.
Something that IS comparable is vaping. It "boils my piss" to quote a MN classic that we are not taking it seriously. 95% better than smoking is not good enough. It's 95% better in the ways we know of. It's going to be the next health crisis.