Women's crisis shelters are charities established by women.  When they first started in the 1970s, many women didn't have income and so no means to leave an abusive relationship.   I'm not sure the fact that there are women's crisis shelters and not men's crisis shelters demonstrates a bias -- it demonstrates that men haven't organized crisis shelters for men.  I presume that's because men, rightly or wrongly, don't see the same sort of need for crisis shelters.  What we have seen in the past few years is the emergence of a few men's organizations offering the same sort of psychological and legal counselling that women get through crisis shelters.