Srsly, he's just all like "I have cancer and you don't, so you better kill yourself, I'll help you with that". All just because he fucked up to kill himself when he was diagnosed with cancer. Even Freddy Krueger has a better motive or at least a motive that is somehow comprehensibly since he was the son of thousand madmen. John Kramer instead hasn't a background like this and since he lost a child himself he actually should know better taking other peoples lives, everyone is another persons son or daughter. What is his intention to "test" people for their "will to live" anyways? Being overly obsessive with other peoples opinion is just ridiculous and getting so far to dictate them how to live their lousy lives is only weird on the threshold of being insane. That's pretty lame. Though I still enjoy some of the SAW movies, at least the first three. That's because of the psychologic aspect - I like movies where there are a crowd of people locked up in a room where they must find a way out on their own. But the motive of the Jigsaw killer bugs me everytime.