Ohhh I have this same belief. I really don't know how long my life will last, and I don't see myself dying of old age or physical illness. I believe one day my mental illnesses will kill me. I know this is so opposite of what I am doing in therapy, where the goal is to get better. My boyfriend and I find society to have a grim future, and believe bad things will happen in our lifetime (not like mayan crap or anything, though), and are already happening. We believe the best option would be suicide if things got too bad (not sure how bad it would have to get). I told my boyfriend that if he believes suicide is necessary for him, then he cannot leave me behind. He would have to kill me first, and he has agreed to do such a thing. Again, this is only if bad things happen such as disaster, war, loss of electricity, something in which primal survival skills were needed. At that point, it may not be worth it to try surviving. Best to end things while you are ahead of the game.