You're asking a question that's both 100% speculative and would require several hundred pages to explore fully.
What do I personally think would happen? Either:
a) If everyone somehow has this technology, overpopulation will lead to constant strife and conflict, resulting in war - and death.
b) If not everyone has this technology, the have-nots will go utterly apeshit and even more people will die.
Just seems obvious to me, going against the grain of four billion years of biology is going to get ugly.
"The devil I'll bring you," answered Hagen. "I have enough to carry with my shield and breastplate; my helm is bright, the sword is in my hand, therefore I bring you naught."