[deafpolygon]

The biggest reason I haven't seen mentioned here is that these cookie banners are run by a few large advertising management entities. They are aggressive about it, because clicking consent on one site will consent for every site that is managed by that entity. But they have to show it for sites you haven't visited.

For example, the user:

- Visits site "A", gets a popup banner managed by "Shady Ad Manager", clicks Do not consent.

- Visits site "B", gets a popup banner managed by "Shady Ad Manager", clicks Do not consent.

- Visits site "C", gets a popup banner managed by "Shady Ad Manager", makes a mistake and clicks "Consent" through the employment of some shady dark pattern.

- Is now being tracked by "A" and "B", because it is managed by "Shady Ad Manager", but when returning to "A" and "B", has no chance to opt out anymore.