> so this is a fair system

Well, no, the cost of their own smoking-induced illness isn't the only cost, as mentioned before what about the healthcare costs of people who pick up 2nd or 3rd hand smoke?

I think the point we are making thay you don't want to acknowledge is that the cost to society, healthcare or otherwise, simply cannot be made up for with sin taxes on cigarettes. If we tried that, a pack would need to cost like 10x or more of what it does now, and even then it's debatable.

Unless we have finer data, I would assume that 2nd and 3rd hand smoke is included in "smoking-related" so in the cost figure. It has also to be much less than actual smoking so will not massively change the NHS cost.

We have already established that healthcare costs are more than covered by existing tax.

Arguing and trying to make up additional "costs" is, again, just fudging the numbers and clutching at straws at this point...

Live and let live.