I'm not sure what the question is, but there is a question, and since there is a question then you keep going. You will know when there is nothing left inside of you to keep going, when there is no questions but how and when. Maybe I underestimate the situation, I just hate to think some people may be using an answer that doesn't apply to their question if you catch my drift. Ctb should truly be the last resort, when you're empty, tortured, exhausted, near dying already in one way or another.. Other than that there's almost always hope and something to hang on to and to keep going for, things can change in an instant. If you don't have a mental or physical disability you're truly lucky. Not trying to lecture you @leaps just sharing some thoughts for anyone who might see... this is no small decision, you will know when its your time, otherwise get a move on and enjoy at least something in life every day.