I'm all for increasing tax on it to FULLY COVER the costs the medical costs etc the country needs to pay for people who get sick from smoking. If that means a box of cigarettes becomes $200 so be it. but no, don't out law it. Also perhaps restrict their sales so they're not easily available from diary's, supermarkets etc but maybe need to go to a specialty store (like west auckland does with alcohol).
I believe that's a non-starter as an argument, tax on tobacco more than covers medical costs for treatment of tobacco related illness.
Sad but true that you're going to die from something, unfortunately "peacefully during sleep" at great old age with no prior medical intervention isn't a choice you get to make. If all smoking was banned, we won't be closing down all the hospitals and putting grave diggers out of work.
Plus, as I understand it, smokers not only pay for their treatment in tax, they also tend to die earlier and faster, saving the taxpayer even more money on healthcare, pensions and assisted living. I've been told that smoking has a pretty much cost neutral or positive effect on the nation coffers.
If anything it is in the Govts (financial) interest to encourage smoking to reduce the number of baby boomers living to a ripe old age on National Super. I'm not even going to go into the socioeconomic demographics of smoking.