@Saidur
His "never back down" attitude is acceptable to a point during a Grand Prix, or even a qualifying lap. His stunning pass on Rosberg at Melbourne in 2010 was a great example of that. His contact with Maldonado at Monaco was a bad example. There is a sweet spot, and when he finds it, that's what makes him the racer that he is. However, I think he's getting worse as time goes on. He was near faultless in his rookie campaign.
Maybe he's just getting frustrated wishing he signed for Red Bull as he seems slightly erratic compared to 2007 and 2008. I still think he should have hit the brakes. You never know, maybe if he did, Maldonado would have slammed into the barrier without touching Hamilton and we'd have a great new internet meme on our hands.