To eliminate Mendelian disease. To increase lifespan, health, intellectual ability, and productivity? This is quite possible with minimal technological advancement. Why exactly is this bad? Because we saw a Star Trek episode?

Shunning these technologies will be seen, in time, as akin to the shunning of inoculations in the Victorian era.

When you find yourself cheering on, however indirectly, Mendelian disease consider perhaps that you are one of the baddies.