The roots are biological, men are the dispensable gender, given that a single man can potentially impregnate several women. On the other hand if a female is lost, her potential progeny is also lost. I'm not alluding to the fact that it is justified just because it's biological. What is also biological is that a large number of very responsible men have lone wolf tendencies, where they despair in loneliness due to the responsibilities, and burden of expectations placed on them.
A some what workable solution ( though again the innate biology can hinder) would be for men to from support groups for each other. Most governments, family, society, and women are not going to do that for men in trouble. Let that cold fact sink in.