I prefer contextual ads, ie. related to what I'm currently looking at, not what my ad profile thinks my personality is based on something unrelated I did on another device last week.
That would be my preference for browsing the web, or looking at results of a search. But what about the ads that rely on doom-scrolling? The ones that are inserted every two posts on a Facebook feed would be hard to make contextual, for example.
Both of these are better that tracking your activity all over the web and using that to target you.
After about ten years or so of Kindle ownership, I recall clicking the ad and buying the book exactly once. Yup, a sci-fi book, and it was pretty damned good as I recall. The title, you ask? Hell if I know, Amazon never showed me another book from that author ever again. And I wish they would, because I can't remember which one in my "stacks" of sci-fi is the one I want.
> So long story short, personalized ads are just as useless to me as un-personalized ads, only creepier, and I'd prefer not to be stalked.