I've long believed we should set up dedicated spaces - probably in sports arenas - for people who are so inclined to be able to fight, weapons free, with some booze on tap and basic healthcare provided and where no laws apply (including, obviously GBH/ABH/murder etc, but also compensation, public liability etc). Some people out there live to be the hard man (or occasionally woman) of their area, and this would give them the chance to do it, and even if the healthcare was publicly funded it might help keep the clubs & bars free of the troublemakers who go out LOOKING for a fight. This culture is in as much denial about the violence of our species as the Victorians were about our sexuality, and just like the Victorian child prostitutes, it's the innocent who suffer when society represses perfectly natural, pro-survival drives.