Trying to think of a movie or series where the woman sacrifices her life for someone else or some cause.

Cant think of one. Even IF there was one, people would instinctively find it repulsive. On the other hand, people love the movie where the man sacrifices his life for the cause or for someone else (usually a woman). This shows us that human biology will never allow men and women to be equal in the eyes of humans. Women will always be seen as MORE VALUABLE and that wont ever change. Because of this, human women will ALWAYS get preferential treatment by humans. Search your soul and you know this to be true. GYOW