Coca Coca spends about $3 billion a year on advertising. [1] I couldn't find a breakdown for how much is brand-building versus other goals, but I think we can agree it's a lot.
That suggests two hypotheses: A) People in charge of a $3 billion budget for an incredibly profitable and long-lived company know what they're doing, or B) An anonymous non-expert on the Internet has correctly realized that advertisers are just fooling themselves, and he (and everybody else) is above being manipulated by brand advertising.
No offense, but I'm going with A.
[1] http://www.ajc.com/news/business/coca-cola-spent-more-than-2...