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It depends if the viewer is interested in the ads that are presented...Just because the ads are there, doesn't mean that they will get clicked...
if your page is about widgets...but the ads are about something slightly off topic...then they probably won't click them...even if they are "on-target" that doesn't mean they will click...
ask yourself...how often do YOU click on the ads you see? (I rarely click on paid ads myself...)
(Just my 2-cents)
By the way, don't click on people's ads for nothing, you'll get banned. It just lowers the conversion rate for all publishers. Really, really, bad habit you got there and a great disservice to advertisers.