One example of 'avoidable' information stored in your browser are cookies related to google analytics services. While we think that everybody benefits from improvements made based upon google analytics data, it is your inalienable right to don't care about that. We humbly ask, that you allow google analytics information storage. Otherwise our path to improving our service is akin to guesswork.

There is 'unavoidable' information which needs to be stored, e.g. login information. It would make no sense to have you enter your username and password each time you refresh the page.