That's not an argument against keeping that history. It could just as well be presented in court as evidence for me, or be presented as evidence against people I don't like. I'm in favor of the legal system having better evidence that they can use to reach more correct verdicts.

Finding evidence "against people you don't like" is exactly the problem privacy intends to solve.

I never want to meet you, if you see nothing wrong with snooping around my life and sharing all my secrets with everyone.