Very simple.
Vaping is not a right and does not defend the rights, property, or lives of anyone.
Firearms are a right and do defend the rights, property, and lives of more than 2.5 million people a year.
They sure trample the right to life.
Firearms are the source of freedom that allowed democratic republics to throw off feudalism.
Firearms are the equalizer that allow women to prevent rape, that used to be far more common before firearms.
There is nothing more essential to liberty than the equality of weapons provided by firearms.
Gun control is totally incompatible with the principle of equality of a democratic republic, and no democratic republic can survive gun control laws.
When there are dangerous people, you confine them, not all possible means they might employ.