The concept of professional sports is an interesting one. It's almost paradoxical. Sports are meant to be fun. They exist for entertainment, recreation, exercise, socializing. Yet at the highest levels all of that gets lost and it turns into a job. You need to be professional, disciplined, put the hard work in, be responsible with the way you play (another paradoxical statement). Then you talk about men like Steve Waugh, and it's basically now a war. Ruthless, grind your opposition to dust, no mercy, no respite, win at all costs.
Personally I'm not a fan of people who take sports to the extreme of war. By all means, be professional, work hard, be responsible, put the team ahead of yourself. That's what you gotta do in exchange for having the privilege of playing sports for a living. But I don't like it when athletes are nasty, joyless, angry, trying to win at all costs, even if the cost is the your opposition's mental and physical health. Winning a game of cricket just isn't worth that for me.