What are people so afraid of when Google shows them ads? And Google lets you manage your ad preferences and control your privacy settings. (You can also use adb

What are people so afraid of when Google shows them ads? And Google lets you manage your ad preferences and control your privacy settings. (You can also use adblock to block ads entirely.) Also, Google doesn't use all the sources of data it has access to, e.g. it doesn't use Site Analytics data to track you.