Cigarettes have no positive function in society.
I had a long day. my wife wants me to stop at the grocery store to get dinner to cook as she's strung out on Valium and never gets off the couch. I'm about ready to beat the bitch as I light up a smoke at 5:03pm as I get out the doors of my onerous workplace. it's my first since noon; clears my head, calms me down. I get a rotisserie chicken and find the strength to saute some asparagus.
never say never, son.
I'm not disagreeing that in that scenario cigarettes are relief. But come on, many things can take the place of cigarettes. A quick run, breathing exercises, etc. It's about conditioning the body to recognize other mediums of stress relief.
That cigarette is not worth it, especially when you know it's going to cause cancer down the road.
More importantly, the state has a right to eliminate toxic things from society, that have no redeeming benefits, especially if the state ends up having to subsidize the treatment for said behaviors. While that's a bit of an authoritarian statement, cigarettes are one way to apply this philosophy for the better good, for example. We don't allow people to drink drano, why do we allow people to smoke?