I’d like to see it happen. The only thing that gives me pause is what if we accidentally make humans with critical genetic flaws we did not see coming, or low genetic diversity.
You can define better genes objectively by looking at genes of people that live the longest and with the least health issues. Natural selection is poor at selecting for traits that lead to longevity.
IMO there are all sorts of possible negative side effects that might emerge. Like a longer life making us more cautious, individualistic, and short sighted (not personally but on a species scale). You could argue this is already happening due to environmental comforts and medical advances. In fact dramatically tweaking a trait like longevity for a new generation would likely have a massive impact on their personality and culture... talk about a generation gap.
Right, but it does in practice.
What if we found that Japanese people lived the longest? Would we only allow Japanese to breed? Or bias towards them? How would you qualify how “Japanese” someone’s genes are?
Can you not see how this leads to a toxic culture of racism?