Smokers selflessly cough and splutter their way to an early death while so many others try to maximise their life expectancy by abstaining from nicotine, exercising and eating healthily. Those self-centred bastards want to cling on for as long as possible without caring about the extra strain an increasingly ageing population places on the Health and other public services, nor for the workers who have to toil to pay for them. As you implied, but for fag fans the world's population would be much higher than it is.
I smoke. I'm happy in the knowledge that each packet is heavily taxed because I will continue to puff for Britain. I'll go further, it's a patriotic duty. For any non-smokers who may read this: don't be fecking cheapskates, get some catarrh at the back of your throats! Soon you'll be producing some quality phlegm to be able to spit further than those who are determined to remain tightfisted.