Sounds similar to most major world/cultural issues today. You can make the exact same argument about climate change for example.

But at the same time, part of me wants to ask... why is this a problem? Why shouldn't we just use science and technology to fix human problems and remove any unfortunate consequences from society?

What's wrong with a world where anyone can eat as much of anything as they want, do no exercise at all, ignore their dental health and smoke like a chimney, yet still have perfect health without any downsides?

Objectively, it would be a better society, with everyone materially better off and a system that doesn't need anywhere near as many resources to care of its citizens.

Why would it matter what route is chosen here?