Advertising is a racket, like the movies and the brokerage business. You cannot be honest without admitting that its constructive contribution to humanity is exactly minus zero.
The sole meaning of life is to serve humanity by contributing to the establishment of the kingdom of God, which can only be done by the recognition and profession of the truth by every man.
There's something about when humanity goes from hoping they get lucky in finding something fermented to doing it on purpose. They don't understand what they've done until the late 1800s, but they know if they combine things in a certain way, they'll get something magic.