I guess GOD would not let us discover things that can save lives or prolonge the life of an individual if he doesnt want us to live longer and realize our mistakes. I dont believe in euthenasia, only GOD has the right to know when is the time to be with HIM, as long as theres a way to restore the life of an individual, it is our responsibility to take care of them.
I think the reason of acheiving euthenasia is because we can not accept the fact that our love one is suffering with some condition, running out of money to support them and breaking away from responsibility.