I understand why there is fighting in hockey, I just don't think it belongs.
That said, the deliberate attempts to injure/maim/kill/end careers should be dealt with by a lifetime ban from the league. Bertuzzi, for example, should not be playing professional hockey anywhere in this country.
As soon as people find out that a good player has a weakness, the goons go after that. Bobby Orr had people hacking at his knees and ankles for years, and to me, that was inexcuseable. Lots of people deliberately tried to hack at Gretzky's knees, too. That's because they were trying to make up for their own inadequacies. Coaches and players who encourage this crap should be kicked out of the league, and the teams fined hundreds of thousands of dollars.
But alas, there is still enough demand on the part of the fans to watch this foolishness, instead of watching good play, with hard clean checks. So, the league is catering to the louts of the world, who want to pay to watch other people fight. Me, I like to watch skilled players, be it Peewee, QMJHL, or NHL. I want to see skills, not fists.