How would this make a website better? And how would they make my website better? Oh, I know, I have to use their service! And give them data.

If I'm on the other side of the table, either I want to make money and I don't give a shit, or I try to respect my customers and take the minimum I need only if they agree. They make money with it, in other words, they can't be trusted by users. Why? Simply because users are not customers, they use our data to make business.

If like me you hate when people take your data behind your back, you would not use google's service. However they are useful, bing is not an alternative. But don't stop here: use scroogle.org/NoScript plugin/AdBlockPlus plugin/etc. There are a lot of ways to deal with google's bullcrap.