I would not support a ban on all smoking.
If you smoke and you have children, you are wrong. Plain and simple.
If you smoke in your house and people don't like it, they don't have to stop by.
Drinking is also legal. How can the people who run football stadiums stop you from buying alcohol at the end of the 3rd quarter?
Why can't you have an open container in your car (in most states)?
Owning guns is legal but I can't keep one in my car unless it's unloaded and separated from the ammo (unless I have a CCW).
Driving is legal but why can't I drive 125 mph down the highway? (please don't point out that it is legal in some areas that are barren wastelands... I'm aware of that)
"If you smoke in your house and people don't like it, they don't have to stop by"
The same applies to a private business.
"Drinking is also legal. How can the people who run football stadiums stop you from buying alcohol at the end of the 3rd quarter?"
This a rule implemented and enforced by the STADIUM OWNERS, not the government. I have no problem with resturaunt/bar owners implementing a no-smoking policy; I do have a problem with the government mandating it.
"Why can't you have an open container in your car (in most states)? Driving is legal but why can't I drive 125 mph down the highway? (please don't point out that it is legal in some areas that are barren wastelands... I'm aware of that)"
While your car itself may be private property, it is traversing public property and therefore (reasonably, IMO), the government has an interest in how you behave in it. You CAN have an open container in your car if your car is parked in your garage.
"Owning guns is legal but I can't keep one in my car unless it's unloaded and separated from the ammo (unless I have a CCW)."
Aside from the car-as-not-quite-private-property issue I noted above, you DO have the right to carry it in most states with the proper permit (as you noted). We have a legitimate 2nd amendment argument with any states that don't allow CC