Am I wrong? Strange… because… I study in one of the best universities in the country I live. And in this university, all my colleagues use different browsers, with clean settings, every time they will use a university computer for a second time. To make this different, you have to do a lot of efforts that are fair from being common… and are not getting more common either.
The country which I live have an estimated population of more than 212 million people today. Is this a small country?? The habits in big cities here are similar to habits in many big cities, in many other countries of the world. I am surprised you think differently than this.
And my usability complaints here are far from being anything meaningful. They are caused by simply stupid and arbitrary choices made in OGS. Not due my privacy choices.
If you think it is SAFER to leave your settings everywhere… 
