[teaneedz]

My guess that it's the Facebook employees, advertisers and marketing people who like this.

There's a flawed belief that it's necessary. UX on the other hand suggests otherwise. AdTech is not concerned with UX though and tries to wrap targeting in some kind of pseudo user benefit—spin.

Good products and services sell even without tracking. Advertising is an economic powerhouse though and will always push for anti-UX trends because it fundamentally runs polar opposite to the user experience.

[jazzyjackson]

Hell, good products and services sell without advertising!

Advertisers study how to sell a product, and the most important product they have to sell is advertising.