Emotional responses are irrelevant when countered by objective evidence and reasoned thinking. Whether a person "likes" it or not has nothing to do with whether the law is justified and withing the authority of the government.
In politics, the emotional response does matter. You can be right but be politically wrong.
Your line of reasoning is horrifically flawed. It is already illegal to perform a long list of activities on your own private property.
There is also a long list of things that one can do in private that one can not do in public. There are also constitutional rights given to people in their homes that are not given to people in public places. Smoking in the home does not impact anyone else outside the home. A meth lab does put others outside of the property at risk from the chemical hazards alone.
Your response is a gigantic red herring that fails utterly to address any single point regarding the restriction of smoking on private property. Instead, you've appealed to emotion, and then made an assertion without supporting it (the door of a home is a "very good spot" to draw the line according to you, but you neglected to say why).
The reason why is the same reason that the Bill of Rights has restrictions on search and seizure and the restrictions on quartering troops in one's home. Our homes have special protections under the Constitution.