It's just ingrained primitive instinct; and quite simple psychology really. The social "cost" of a Mans death is much much lower than a Womans. Loss of 80% of

It's just ingrained primitive instinct; and quite simple psychology really. The social "cost" of a Mans death is much much lower than a Womans. Loss of 80% of the male population could be recovered fairly quickly, but loss of 80% of the females would be devastating for generations.