What works pretty well for me is the "i don't care about cookies" extension for firefox; my default privacy policy is to throw away cookies when the browser restarts, which I do a few times per day anway.
> I disagree with this idea that businesses should have to keep their customers secret
They don’t. They just have to ask the person whose personal data it is if they can.
When it's needed for the website to work properly, it will automatically accept the cookie policy for you (sometimes it will accept all and sometimes only necessary cookie categories, depending on what's easier to do).
Instead i use this https://github.com/OhMyGuus/I-Still-Dont-Care-About-Cookies