See you have to insert the word "spying" to make your case, because by itself there's clearly just nothing wrong with personalized ads. Online ads are good because they make tons of business and economic activity possible and connect people to products that they want. People are better on the whole with online ads.

There are ways to misuse ads, but it's hard to make the case that they are inherently bad without inserting weasel words like "surveillance" and "spying".