The core problem with editing human embryos is that we can't stop at fixing diseases. Once we accept the principle that we can rewrite the genetic code of a future person, there's no logical line between preventing a fatal illness and selecting eye color, height, or intelligence. That's the path to designer babies, where children become products engineered to spec rather than individuals with their own right to an unmodified genome. And what about consent? The embryo has no say in changes that will affect every cell of their body and all of their descendants. We're making permanent, irreversible decisions for someone who doesn't exist yet, based on what we think is best. That's a frightening amount of power. I get the appeal of erasing genetic diseases. But the risks and ethical costs outweigh the benefits. Just because we can do something doesn't mean we should.

You opened with "Hi" — that's not an argument. If you're for embryo editing, you need to actually engage with the hard questions here, not just cheerlead for the technology. The usual case from the other side is that we already accept medical interventions on children, so what's the difference? But that misses something crucial. Treating a sick child is helping the person who exists. Editing an embryo is deciding what person should exist in the first place. That's a fundamentally different kind of power. And once we start down that road, the slippery slope isn't just a hypothetical — it's a basic fact about how these technologies get commercialized. IVF already has clinics where you can pick traits, and that's without the genetic editing toolset. You can't get consent for changes that ripple through generations. That's not a technical hurdle; it's a moral one.

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