Can you imagine the ridicule an all male organization would get? "National Organization of Men" wouldn't be accepted by most as it isn't PC. Politicians would shrink away, as would most business. Business understand that it's women who SPEND the money, generally speaking. No, for now, grass roots mens groups are better served by influencing politicians (who make the laws) behind the scenes. Any large, umbrella organization would not be held in esteem by most, because it would be seen as sexist and not PC.