I've never understood that mentality. If we see an animal suffering, we treat them humanely and help them pass to get them out of pain and end their suffering. But with people, you're forced to hold out to the very end no matter how much pain you're in or how much you're suffering.
If someone is suffering or has a terminal disease and wants to end it all, they should be able to do so in a way that is as painless and comfortable for them as possible.
Its such a foolish thing equating it with murder. Thats like equating receiving a gift with stealing and hey there are all sorts of middle grounds with that too if you figure things like extortion and bribery.
I used to think that way until i learned that in uk some social workers suggest it as a legitimate solution for people that complain about the level of care they are receiveing. They really do say to patients that if they are not getting enough help they have that option.