The cookie which stores the “Do Not Track” request is pretty essential don’t you think? Cookies is just what we call a particular websites local device cache. You can store whatever you want in there but they are best used for user settings, what user configurable theme should the site use, maybe you have a login token in there. Essential cookies (cache) the site needs to function properly.

Cache isn’t scary, it’s the tracking info and other related data they use to sell you ads.