Earlier quoted context omitted.
> the problem is not with advertising in general I disagree. Advertising is intrusive and designed to convince you to do things you wouldn't normally do. It's large scale psychological manipulation that's only considered ethical because we've been doing it for so long.
> designed to convince you to do things you wouldn't normally do. When I search "good USB charger" in Google and get an ad, click the ad and make a purchase for a USB charger, how was that nothing something I normally would do? There's absolutely deceptive advertising, but to pretend all advertising is "intrusive" and "convincing you to do things you wouldn't normally do" is disingenuous.
Why do people have such a great impression of John Deere tractors? To the point where there's a whole culture of "green iron" and other companies had huge trouble breaking into the market? Ads. Ads going back to childhood in the form of toys.
Why do folks trust some brands, and not others? Why is brand recognition such an influential thing when it comes to making purchasing decisions? Why do children beg their parents for certain toys? Why do adults pick TGI Friday's over the diner next door?
Ads.
EDIT: I think it's worth flipping the question a bit as well. Why would companies pay for ads if they had no value, if they did not change our behavior? If we'd do something naturally, there would be no need for ads in the first place.