The "advertising business model" is to just push vapid, gratuitous shit. The fact that it is gratuitous shit is what requires it to be advertised.
And for most of us there is the dawning revelation that a life of consumption is...a life of gratuitous shit.
Furthermore not only do other people click on ads, but you've probably done it as well. But in the same way that people who are dieting forget about the condiments they used when they write their food diary, people who are philosophically opposed to ads will forget that they clicked an ad within minutes of having clicked on it.
Go to your web browsing log and search for the ad click trackers for the sites you use (google, facebook, etc.) - you might be surprised at the results.
I guess you think this because you believe that if a product is good then word of mouth or whatever will mean that it sells without advertising.
This is true to a certain extent if the product is unique in a niche or two or three times better than the alternatives.
In the case where the product is best (so it is not gratuitous shit) but not much better. Then in this case word of mouth is not going to provide sales fast enough to prevent cash flow problems and advertising is necessary.