Death Card

When I am old, would I be able to die when I want, legally? Would there be a problem, if we could set the groundwork in advance, so that at an old age we can die without pain and suffering...? Just as many wish to go to sleep and not to wake up again.Sometimes the thoughts of reaching the old age, being incapable, alone, without money, Alzheimer's and all other physical and mental ailments frighten me so much that the fear of floods, earthquakes, tornadoes and wars do not.Why? Because the old age is coming for all of us, women and men, black and white, poor and wealthy,... and when it comes, it is too late to think about it. Unless, every one of us has made preparations for it in advance.