I hate context sensitive search. I want all results, unfiltered. I want to make my own decisions, thank you.
That's a nice example of self-deception.
If you really want to "make your own decisions," you won't use search engines at all, because they all use algorithms that bias some results over others. Google's methods aren't public knowledge. How do you know the non-ad result that appears closest to the top got there "legitimately"? How do you know that, instead of advertising, they simply Google-bombed their way to the top? Yes, Google tries to thwart this, but it doesn't always work. Or do you really trudge through dozens of pages of search results, considering each one on its own merits no matter how far down the list it is? If so, you have a lot more dedication than me (or most people, I'd gather.)

I'd rather click on an ad that says they are selling what I want, as long as the price is right. Obviously, I do compare prices. That matters more to me than whether or not I got there through an ad.