No, it is not full or none, that is ridiculous. You are allowed to have a line that you will not cross.
What you (or any of us) think about it in moral or ethic terms, is irrelevant.
What would phone service be like if the carrier could decide who gets to use it and who doesn't? They are not held responsible for criminals using phones but if they decided who gets to use it they would be liable.
This is like a serial killer who campaigns against littering. They have a line they won't cross, but we shouldn't accept it.