They are sometimes necessary.  There are times when choice must be made, either the mother dies with the baby or the baby is sacrificed.  If the mother dies, the baby would die as well regardless.  Sometimes a choice must be made.  Nobody likes to do it but it happens to be necessary.  Take the child in an institution that is raped by a worker. Zero brain function on the mother, a living tight boned, rigid muscled and bedridden.  Now very pregnant, do you make the child who was raped by some idiot, die from The activists want these brain damaged children kept alive at all costs, then what comes next when this child becomes pregnant and it is harming her?