Ads are evil. To work, they play upon human insecurity. In many cases, they create desires or perceived needs that weren't there before, making them wasteful in addition to scammy/conniving. Because they're successfully evil - the tricks work - they often leave a residue on people: beyond just never being able to forget a jingle from a cereal ad you heard when you were 8, a lifetime of very frequent exposure to advertising trains us to suspend our criticality, or hinders us from developing it in the first place. So it leaves people dumber, too, more pliable and dependent. Hilarious in a country like the US, whose national mythos is so obsessive about personal liberty and rugged self-reliance.

We have a family friend, retired now, who had a successful career in marketing and strategy in multi-billion dollar transnational companies. I once asked (probably naively) why [maker of extremely popular product at the time] ran so little advertising. The friend told me "they have a good product. They don't need to spend money haranguing people into buying it or spreading the word about because it's actually good. Word of mouth is free".