I do not want you to suffer any more than you have to, but there has to be a solution other than physician-assisted death, because whether it seems like it or not, I believe every person, including you, is here for a reason. I hope you know that your life has value regardless of what you can or cannot do for yourself. You can still make a valuable impact on those you come into contact with.
When we look into the eyes of another, especially if that person is our son or daughter, it changes us. We begin to understand what it means to be created in the image of God, to be fearfully and wonderfully made.