TBH, everything that Google does is to get information on you that they can sell. It is a gift pure and simple. The currency is the data on your life.
But hey, that's just me. I don't use google for anything other than those stupid captcha things. Every year or so I use a computer in my local library and do a google search for me (not samantha). So far I have found that I am buried so deep in their results that it makes me pretty well invisible to their bots. Long may that remain.
Samantha