Google makes billions of dollars in revenue each fiscal quarter. That money comes about by the same process that all companies use: They sell a product to their customers. Their customers pay money for that product.

Who’s Google’s customer? You? Really? When’s the last time you paid Google for anything?

Advertisers are Google’s customer. What do they sell to advertisers? They sell you. Or, at least, they rent you out, or provide access to you.Mike Elgan

Assuming I'm going to see ads on the internet anyway, my total experience is improved the more relevant and helpful they are in connecting me to what I'm looking for. To the extent that my information helps Google improve my experience on the web, they're welcome to it.

Would I rather no ads at all? Yes. Realistically speaking that is not going to happen.