I'm a fan of guys like this, Chris Neil, Cal Clutterbuck (not so much a fighter but man does he hit), guys who have a strong physical presence but actually have a bit of offensive skill and can put up a few points per season unlike guys like Konopka. Clutterbuck was the short handed point leader on the Wild 2 straight seasons I believe, was great on the PK, and still showed the ability to put up some points.
I think he makes a good point, that if you eliminate fighting from the game, it takes the fear out of players a bit more to lay out hard hits and cheap shots to other players when the only risk is a fine and/or suspension opposed to getting your face bashed in and answering for the physical output they inflicted.
I also respect the drive, it's like any job, if you aren't succeeding in a certain role, take on a different one and see if you can improve your value and make your presence known by gaining more tools. Guys like Prust dig in hard, give it their all every night because if they don't, they risk potentially losing their spot to someone else that can contribute more.