First the rich will do it, some in secret eventually unapologeticlly, to insure their designer kids have a step up. These designer kids will be the ideal fawned over by society in the media.
Any un-enhanced kids pressured and taunted by society will blame their parents for their genetic physical and mental "weaknesses/shortcomings"
Any who abstain on outdated moral grounds will be marginalized by society as backwards, weak, ugly , dumb and creatures of the past.
When it's finally affordable everyone will start doing it. just so their kids can compete in a world that caters to those enhancement ideals now shared by most.
Eventually everything looks, intelligence, height, race, etc culminating in one homogenized gender as none will want to have their kid being discriminated against or be biased on one over the other, so they'll all be born with both genders, i.e there won't be gender, it will be a non issue.
A generation will be born where all humans will be so genetically similar pulling from the same idealizes stock, that breeding will disintegrate as there will be no variety of genetic information being exchanged. The equivalent of over-interbreeding.
Goodbye human race.
With the ability to reproduce destroyed, cloning becomes the norm, and we have a society of a same self replicating hermaphrodites.
Congratulations, the perfect human cockroach....
fyi amalgamation of Will Smith, Brad Pitt/Tom Cruise and Angelina Jolie.
but I would make my kids better than me, but give them wizard powers. No, X-Men powers. Singing ability, no speech problem, higher I.Q., and super powers. 
and, eh, they be mutants.
cause we would be THE GODS! MUAHAHAHAHAHAHA....-_-.
