The point is not if it works, is if you should do it.

A lot of people don't want this to be done to them, even if it works for you.

We outlawed slavery, human trafficking, rape, fraud, theft etc even if it worked for some, because working was not the point.

I wasn't able to interpret your post in terms of results, i.e., in dollars or ROI, and I don't know if your results are representative of advertising overall.