The problem is that all personal data is potentially incriminating and harmful if not tightly controlled. I am not thinking about actually people/governments tr

The problem is that all personal data is potentially incriminating and harmful if not tightly controlled. I am not thinking about actually people/governments trying to do bad. It is a matter of chance and false positives, that plainly increase with the amount of data. There is cases when it is totally legitimate for law enforcement to seize all communication. It happened to me once and it does not feel good if all your communication is seized and searched. You give away personal information of so many individuals. Actually one should in those cases inform everyone about such information 'leak'. Alternatively having a red button that deletes/hides all your data, would also not look all to wise and it will put further stress on you in such a situation, in which you know that most probably everything will turn out well for you. Even if not giving away third party information would be the ethically thing to do , you will not likely do so even if the claims against you are not justifiable. So better delete your conversations and reduce your footprint. This is also good for email. Everyone should just do what we expect from companies...