so, in your opinion, the best way to be polite is to not exist? that's a nice outlook on humanity
The converse to your claim is: the only way to exist is to intrude on other people space (by loud talking, hearing music etc).;)
OP said: polite => not exist. I said: exist => not polite (the contrapositive).
Thus this very well involves potentially intruding on other people's space :)