There are several important points where Mr Cameron’s argument is fallacious; – they are as follows.

* This position presumes that people with disabilities are lesser human beings with fewer human rights than the rest of us. Mr Cameron’s view would mean effectively that these ‘lesser human beings’ could simply be ‘put down.’ What kind of ‘master race’ mentality is this?
* Although I agree that if it can be independently determined that a child is going to spend a life of pain and suffering, ocassionaly, this might be the correct solution, the question is, can we accurately detrmine this? Medical people have a nasty habit of making mistakes, that is how many childhood disability issues are caused, (Shall we terminate doctors who make these errors perhaps?), so are they to be relied upon to make an accurate judgement of a child’s future? I think not.
* Quality of life is a subjective measure. What might seem to be an unacceptable quality of life to you or me, might have a completely different perspective from the point of view of the person whose life it is! Who is qualified to judge? – Certainly not I!
* Mr Cameron’s proposal that disabled children could be aborted as late as thirty-nine weeks is simply monstrous and is tantamount to cold blooded murder.

All life is sacred. All people, no matter what difficulties they face, are valuable human beings. We cannot utilise our own subjective judgements to determine which people are allowed to survive and which people are not.