> This puts the onus on me to make an affirmative choice each day to continue to live. If I am unwilling or unable to enter the passcode, that indicates either 1) my condition has deteriorated to the point where I am cognitively or physically so disabled that I cannot remember and physically enter the password, or 2) I am making a conscious choice to end my life.

Or (3) hardware or software defect exists and has been triggered. Fail-deadly systems are usually disfavored for very sound reasons.

Now, I suppose in this situation you could be convinced enough that you are going to want to die so imminently than the risk/cost of an accidental early trigger is acceptable, though.