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Why did he need to sacrifice himself at the end? He's found the cure and there's enough room in the emergency hatch. Why not hide in the hatch, throw the grenade as the glass is about to break, close it and come out the next day?
I thought so too that there will be discussion on his choice to sacrifice his life in the end of the movie. While all of us are thinking hard and deep as to what made him to choose such path, perhaps we should look back on how determined he is in finding the cure and not letting the infection to take supremacy.
When the first flash back to the past was shown, his wife was persuading him to join his family and work out the cure from a safer distance and secured ground but his response was "This is ground zero. This is my site. I'm not letting this to happen". Clearly this shows that he chose not to leave because he had set the objective to find the cure to restore human population as the paramount priority and only to be followed by the second priority of returning to his family at the aunt Sarah's place and lastly, both these decisions were made before his wife and kid were killed in the helicopter accident. There is no reason for him to travel to the aunt's place since his wife and kid are gone and therefore, his second priority is no longer valid, which leaves him with only one primary purpose and that is to find the cure for the human race.
His purpose to live on is fulfilled when he found the cure and there is no more reason for him to continue his life.
Other reasons that pushes him to the edge of sacrificing himself is his state of mentality and emotional instability. I'm sure you guys know how strongly he believe that there is no survival colony. Remember the scene where he comes up with all the statistic of the world head count of 6 billion hit by the KV that extermintate 90% of the human population and with the remaining of them turning into darkseekers and leaving a 1% of population who are not affected by the KV and bla bla bla... [I can't remember anymore la]. I doubt he will change his mind about the survival colony since he had been trying to find life for 3 years but never seems to found any.
This is my point of view and what I believe personally of how he came to the decision of sacrificing himself. I find that other reasons posted such as his family is all gone and there is no will to live on is valid too and seriously, I think its just way difficult when all of your love ones are no longer around and with his state of mind and emotional instability, I think its just going to be "mission impossible" for him to start life all over again lo.
On another note, one of the scene in the movie that really got to me was when he walked up to the mannequin in the DVD shop to say hello. sedih gila wei. Also it was just right to cast Will Smith in as he can make something as simple as a relationship with Sam(his dog) to be so powerful. Respect!
"No Man Is An Island"
This post has been edited by spartacvs: Dec 22 2007, 03:01 AM