You're wrong. I'm only responsible for myself and my buddy. Say it with me, "Personal Responsibility". If you feel that your certification was not enough, hire a private DM to be your buddy or retake the class.
It would be a good idea to identify yourself on a dive. That way, if you ever get in trouble, other divers will know enough to let you fend for yourself! "Personal Responsibilty" has nothing to do with your willingness to help someone with less experience than yourself.