There is no time in my life I am less likely to buy some white pants, a toaster or a flight to Los Angeles than after I've just bought these items, yet that's precisely the time I see ads for these products or services.
In other words, digital marketing is a con. It's conning business into paying for technology. No actual value is achieved.
I think a population, decreasing or increasing toward stability, is a sign of civilization. Resources are being maxed out, people are no longer starving, and you do not need children to take care of you in your old age. I'm sure that in the US this doesn't hold, as you'll have infinite resources and infinite growth potential, though in the rest of the world, people beg to differ.