Because the mission was launched on a free return trajectory, the crew of Apollo 13 survived. Has that abort option ever been foregone in any mission that flew or was seriously planned?
(A free return trajectory is one that will allow a ship to return to its origin because it picks up enough speed on a low pass around a second body to escape its gravity and head back home. No fuel is needed to return. The Apollo flights landed instead of heading back by retro-firing their engines to slow down, except for Apollo 13.)