If there were no ads, people would judge based on the quality of products, instead of being manipulated to buy things.

I obviously block ads. I understand that lots of things would cost money that currently are free, but many things would still be free. The old internet consisted mainly of free things and was not infested with ads.

Please, tell me one positive effect that ads have on society as a whole. (So not for you personally, because I know they make money)