My dear, u obviously have no idea, how the body is put together, Ur arm will Not just twist off, it is connected by Very Strong Muscles, a hatchet would do the trick.
With new cures coming out daily, they must first investigate that.
If they don't have the money to spend, they will just take the easy way out, and all avenues must first be investigated before, a drastic step like that, but who will pay for the expenses?
Else giving them a painless lethal injection, is acceptable.
It is their lives, and they can make the decision to end it, no-one else, that wants to inherit, or get rid of the burden.
RE: Wedding of Prince Harry and Meghan Markle
They appear to be the two odd ones so I wish them all the happiness they deserve.