"There are many, many people who died from lung cancer or emphysema who would not have gotten it except that they smoked"
Prove it.
My grandfather died from Emphysema and he and my grandmother never smoked a day in their lives.
"Officially cigarettes are not the cause of death, but they are the reason that the person got the cause of death. "
You can't on one hand say 'cigarettes are not the cause of death" and on the other say "but they are the reason that the person got the cause of death" because without "proof",those two statements would be mutually exclusive.
"The experience of handful of kids proves nothing. My siblings and I grew up in a smoking households. Two of them had allergies and breathing problems and I didn't. So does that prove that second-hand smoke causes problems in some people and not in others? Of course not."
That's right. It doesn't 'prove' a thing, good or bad.
"Let's say there's absolutely no proof that second-hand smoke causes harm. But there's also no proof it doesn't (something that couldn't be proven 100 percent anyway)."
Then there is no proof and the rest of your post is nothing more that speculation and unfounded fear over what 'might' happen.
What if I get up tomorrow and get in a car crash and get killed? Should I just stay in bed and avoid it.
You have no argument or proof. Just opinion.
"Back when I smoked I NEVER smoked in the house and not in the car when the kids were there."
Your choice. Nothing more.
"My grandfather died from Emphysema and he and my grandmother never smoked a day in their lives."
I never claimed smoking was the sole cause of emphysema. In fact, I don't know of any disease or condition caused by smoking and smoking only.
"What if I get up tomorrow and get in a car crash and get killed? Should I just stay in bed and avoid it?"
Irrational reply. Staying in bed is not an option if you want to have a life. Not smoking around your kids is, at worst, a minor inconvenience. The horrors!!! You might to step outside when it's hot or cold or not smoke for another 20 minutes. On second thought, that would be too much trouble with only a small chance of benefit for your kids.
"Your choice. Nothing more."
The odds that my kid would be abducted by a stranger are exceedingly small but I chose not to let them wander around by themselves. The odds that they would get e coli from undercooked meat are tiny but I cook the meat through. I could go on and on.
I'm assuming from your replies that you're one of those delusional folks who argues that smoking is not harmful in any way. If so, I can't discuss this any further with somebody so irrational. Even SheLion doesn't claim cigarettes are harmless.