It seems likely that widespread population level cognitive enhancement will be irresistible. Studies based on removing lead, which reduces cognitive ability, from the water and paint, have estimated that a 3 point IQ increase would lead to:

Poverty rate -25%

Males in jail -25%

High school dropouts -28%

Parentless children -20%

Welfare recipiency -18%

Out-of-wedlock births -15%

Human enhancement has so compelling reasons, that beyond some safety issues that must be taken care of, there is no reason why not to practice it on large scale, as soon as it becomes safe and widely available.