First of all: You are freeloading, which is kind of cheap. Secondly, advertising != mindless consumerism. Advertising is a (heavily biased, which can be useful) source of information that fulfills a useful function in many cases,
You know what the thing is about Google's ads? They are very, very smart - which is pretty much the only reason why they can make billions of dollars with tiny text ads. Sometimes I'm looking for something out of the ordinary that has to be bought at a store, not fashioned from the intestines of my domesticated animals. (I'm sure you hardly ever experience that predicament). Google's ads usually take me to a reputable place immediately.
Unless you absolutely always know exactly what you are looking for at any given time, you are sure to learn something by looking at their ads.
I have a paid Google Apps email account, but keep ads turned on because they often deliver interesting tidbits of information (mostly on competitors and other stuff that my work-mail is about) that I wouldn't actively have gone looking for.
And dude, sorry to break it to you, but you are a fucking consumer as well.