I don't have anything against personalized ads based on information that I willingly share. If I am following a bunch of groups of kite-surfers, I actually welcome ads for kite-surfing gears and services while browsing those groups.
If I explicitly decide to share my address on my social network profile AND, explicitly authorize the use of this information for targeting, I don't mind, and actually welcome seeing ads for carpet cleaning services from my city, instead of ads from this kind of business located thousands of miles away, WHILE I am using said social network.
But I don't want to browse the local newspaper, and having this targeting information being used outside the explicitly bounded context of that social network.
And above all, I don't want surveillance-style stuff things forced upon me to infer information about me that I never consented to share in the first place.
It is ok to me if I say, I have an interest on X, you (and only you) can show me ads based on that, and I also consent on you (and only you) using my <insert whatever personal info you may think ok> to target ads.