Basically, there are people who think that at some point in time companies will use data about them in some type of very bad way. No one has a real, practical

Basically, there are people who think that at some point in time companies will use data about them in some type of very bad way. No one has a real, practical example of this. If someone can describe a business model that will use this type of data about people's interests to do something bad to them and make lots of money, then this will become a theoretical problem. Even that hasn't happened yet. There's also all kinds of "don't track me" options available from Google/Microsoft/etc. as well as incognito mode in most browsers. It's time for people to find something else to worry about.