@Finn dAbuzz,
The conflict here is between medical expertise (which is logical and scientific) and emotion (which hates the idea that children die). Letting the parents override medical decisions made by doctors is choosing emotions over reason.
I just looked at the cancer statistics, it seems that both sides of the political aisle (US conservatives vs liberals) are cherry picking statistics that support their case. The statistic that I think is logical to me is cancer deaths per 100,000 which gets rid of all of the questions about testing. In these the US and UK are pretty close.
But, the big question to me is who makes the medical decisions... particularly in the cases where there are ethical considerations?
Doctors are trained, they have scientific expertise and medical experience. And, doctors can make decisions without emotional attachment (which is a good thing when you are making a rational decision). Grieving parents are not so good at making these decisions.
I am a little torn here, the feelings of the parents are obviously important, they aren't the basis for a sound medical decision, but they are still a very important factor in the decision.
But still, doctors are in the best position to make these decisions objectively when considering the best way forward. Sometimes the most kind, humane and ethical course of action is to let a child die.