I felt the same way once, especially when Google first came onto the scene with their plain text unintrusive ads. After the 90's, they truly were a breath of fresh air. They weren't intrusive at all and for the first time were often even relevant. If memory serves I even bought at least one item from a text ad on Google sometime around 2005 or 6.

What's happening today couldn't be more dramatically different. Tracking your activities around the entire Internet, then using your own computing resources to auction them off to the highest bidder for every new page you view.

I don't have a solution to the ethical conundrum. But accepting this kind of thing cannot be it.