The problem is that you just KNOW that eventually it will be possible and even cheap to record all phone conversations. Then what? There is no business reason to record that data, therefore there should be no recording of that data without consent, either via the owner of the phone or a judge via a warrant.
I like the idea mentioned above, overwhelm the system with nonsense. Similar to a suggestion regarding 'key words' that get internet messages flagged, everyone post those words over and over to overwhelm the system.