If we look at history of our spieces, we came down from a tree 5min ago.

We are in 95% still the same animal and 5% intelligent human.

Vast majority of all of our weird discussions is about us not accepting this fact.

In this case its:

1) Men are competing with each other for resources and women

2) Women only want strong resourceful men

3) Our only purpose was defined by first living cell being born - we have to sustain life

Outcome of the above is:

Nobody cares about men that dont succceed (which ofcourse will cause a lot of men depression).

I spent my teen years in a rural community and observed, and formed, a lot of strong bonds with men. Back in the city, I still see examples of kindness and camaraderie among boys and men. So all I can say is my experience doesn't bear out what your point 1 is asserting. My own view of modern men's isolation is that it's a fairly recent pathology.

The above are indeed simple, hard, physical facts of the matter that few wish to address.

edit: typo