Comment by Noaidi

To me, Daniel Kahneman humiliated himself by choosing suicide (if he was in a sound state of mind to make that decision). He was a scared, little old man. He made an assumption that his life was "obviously no longer worth living", how little he thought of life is pathetic.

Now he could have been depressed after his wife died and was just lying to himself that this was his own, autonomous, decision. Depression can do that to you, it can make you think suicide is the most rational decision.