at Marek.
Seriously, if people choose to die in the knowledge of as many aspects and considerations as they can accommodate, then ultimately it is up to that person what to do. It is that person's life, and the one thing we are given is - as far as is possible in societal circumstances - freewill to decide what to do with it.
If one considers that the perspective of an eternity of regret, as taught by some faiths, is of less sure consequence than some years of suffering on earth for one's self and one's loved ones, and maybe even detriment to one's society, then perhaps it will be the case that assisted death will be chosen. We can only make that choice in the knowledge we have, which, of necessity, will always be imperfect.
The only thing that would concern me is whether there is differential access to care or assisted living or assisted death; perhaps filtered by ability to pay or where one might live in the - for example - UK. Another consideration is the dilemma of Terry Pratchett and others suffering from the same condition, who may, simply because those assisting the death have to be certain it is freewill and sound mind that informs the decision, be forced, should he choose death, have to take that death earlier than perhaps would have been truly wanted.