Pg does not though... it just evaporates. And yes... there were some flavorings that caused problems and thus were removed from most e juices. or you can decide not to use the ones you know cause problems.
As for the pg creating an issue, you just may have a sensitivity or allergy. Which most people notice when they do and switch to a juice that feels good to vape. Case closed. These are all arguments that have no stake on why it is okay for you to use nicotine and not someone else. They are all adult and can make up their own mind.
No it doesn't, what it does do is tell me you don't care if people who don't have an addiction ruin their lives. Which you can feel that way if you want.