It does not matter if it happens or not. You seem to ignore the fact that we are not God.
You also seem to ignore the fact that murder is murder and is not tied to how much it costs, if they can walk, if they work, if they feel pain.
I worry about your thinking. We are not the judge of who lives and we don't ever want to be - that is God's reign.
No matter how you try to justify it, it is still murder. It is also apparently a very slippery slope for you and you are already on it. I would bet that you also believe in abortion - which is also killing. See - once you kill it becomes easier and the boundaries broaden.
Where is the end? What will be ok in 20 years? Death to all who do not think as you do? Great - we have people everywhere killing others for one reason or another. Life just gets better and better.
I never said do, I asked a question.
Who, what, when where and how.