Maybe we also have to highlight some facts:
We are speaking theoretically. I guess no one had to face such events.

There are two main streams of ideas:
Chivalry
Survival of mankind.

Honestly, in our lives the probability of being in a situation where you have to choose beetween saving your life or other ones is extremely low.

Probability for one where you have to worry about the survival of mankind is even lower.

So mentionning the fact that you have to save children and women because and be careful to have enough males for reproduction is a tad extreme, isn't it?

So I guess we can focus on the dire situation where you have to choose beetween yourself and others.

Keeping in mind you probably don't know about your own instincts regarding such situations.