Baby RB: life or die?

The father from Baby RB is fighting against the mother and the hospital for turning off the life support machines. The mother said to the Sun that it is cruel to keep the baby alive. She wants to save him living a poor, miserable and sad life. The baby doesn't really have a life quality. The baby has since his birth, a year ago, a seldom congenital myasthenic syndrome (CMS) which means that he can't breath independently and can't move his fingers. The father has another opinion about that. He thinks that Baby RB has a good chance to have a good life quality like the other 300 cases which are listed in the UK. The fight went to the High Court where they want to render the judgement. There is no decision yet...

http://www.independent.co.uk/life-style/health-and-families/health-news/father-fights-bid-to-switch-off-babys-lifesupport-1813009.html

http://www.independent.co.uk/news/uk/home-news/let-my-baby-die-says-mother-1813694.html

So what do you think? Is it sustainable to kill the baby or do you think you should keep him alive? Please make a comment on my philosophy blog
http://nicos-philoblog.blogspot.com/