Quote - For example let's say that I am a smoker and I go to someone's house and they are nonsmokers and don't want people smoking in their house. Do I disregard their rules and light up regardless of what they want in their own home, or do I respect their right and go outside to have a cigarette?

That's the problem, I have to go out and in of their house all the time!
And if gets to much anoying, I'll never visit their home again.

Stupidity also evolves!