The stats tell the truth: the top ad spot gets about 2% of clicks (CTR) on average, whereas the top organic spot gets about 20 times that, 40%. Why? Because people trust it more. They trust the Google brand to deliver the most relevant results to their search query. Anyone paying for an ad might be perceived as just trying to hijack that process for a quick buck. It generally takes 3 months to earn the top organic spot with Google (there are exceptions to this), whereas it takes around 3 minutes to place an ad to get the top spot. Society values those who have earned their way to the top in any field, rather than bought their way.
Remember when you used to rely solely on search engines for traffic? Remember when you worked on SEO and lived and died by your placement in Google? Were you #1? Assured success. Well, okay, maybe not assured. Success only came if the keywords were relevant to your site users, but it was the only real roadmap to generating site traffic and revenue.