What if you were a woman who had a miscarriage and the trackers got ahold of that information from your search and browsing habits on planned parenthood (which has a LOT of third party trackers and cookies)? Would you like to see ads of what could have been your baby for eternity?
This information could be sold to insurance providers and your premiums could go up since you’re more of a “health risk”.
There are endless avenues where your data could end up and affect your life in the real world.