No one is saying a severely disabled baby should be killed after it is born . You ' re also somehow defining severely mentally disabled as can ' t work or cook . What about incontinent for your entire life , can ' t eat on your own , or bathe yourself , or think above a first grade level . Or born without a brainstem , need to be on a respirator and have multiple organ transplants to literally save your life every few years ? With recent advances in prenatal testing , it is now possible to detect many disorders within the first trimester , before the fetus has developed consciousness . Killing a grown human who is now disabled and can ' t work is not the same as aborting a fetus that is missing part of its brain . And in response to the previous question , if a traumatic injury made me severely mentally disabled , I would rather die than spend 2030 years shitting in a diaper and being an emotional and financial burden to everyone I have ever loved .