Who wants personalized ads? When you watch the Superbowl, or flip through a People magazine, or look around the terminal while waiting for the train - does the lack of personalized ads seem like a problem?
I can't think of anything that personalized ads have ever made better.
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The average content producer (like every one who isn't already popular) doesn't get to flick a switch between "general ads" and "personalized ads".
They get to choose between no ads (because they are too small to attract private ads) and the ability to make money. Look at Adsense or Youtube.
For example, 90%+ of Youtube creators couldn't negotiate an ad deal like Leo Laporte because they are too small. Generalized ad services like Adsense/Youtube create income for the 90%, and personalization boosts that income allowing more people to produce more content.