You can do what you want. We all can. I would "Million Dollar Baby" my child, if the situation truly called for it. I can't even imagine having to do that. Seriously, I watched that film once, and never again..OMG...I can't even think about it.
As a parent, pondering the death of your child is horrible. Ending their suffering by necessity would be equally horrible! Allowing 7 F***tards to decree the death of a child, once you know better, would be inconceivable!! I would throw an Elder out of a window and go to prison for murder, before I let the ass-hats of Crooklyn decide the fate of my child. If "God" doesn't like it, then screw him too.
Ending a life is serious, even when it's a kindness. I grew up on a farm and killed my share of suffering animals. Let me tell you something, when you look into their eyes and they look into yours..it's as real as it gets. If you don't cry, even for a "dumb animal", you need help.
Taking the life, or allowing the life a lucid, informed, mature adult, to end is a HUGE...HUGE, life altering ordeal. To just allow someone to throw away their life because of the religious buffoonery of some Pedo-protecting charlatans is another matter entirely!!