Lady Muck:
"Dh and I are both on the register and our NOK know our wishes. But I find it difficult to make a similar blanket decision for the dcs. Dh and I often travel for work, and the thought of having to consent to turning off life support for a dc before the other parent could get there would be immensely difficult for me (I'm just using this as a reason why I might not consent). The idea of this being a legal requirement frankly disturbs me."
If your child would be on life support, I would assume them either to be reasonable stable at the time (whilst still may not have a chance of recovery), and therefore there is no rush to make a decision anyway...as I would think that no matter what situation, this is not about "robbing" anyone precious time, but once the decision is made to turn of the life support then everything will be put in motion....so, no one would rush anyone or expect a loved one to go without there time of good byes.....
Also....if you rather make the decision about your children at the time...then opt out for them, but if the situation is "right" (not that it could ever be if you loose your child) you could still agree to organ donation, I would assume...
DH and I talked about this in lenght, as I am on teh registre and he isn't (for personal reasons, but he wouldn't expect an organ neither), however, we did say, that should anything happen to our Kids, that would mean making this decision, we would agree to organ donation (unless, by that time our Kids personally would have told us otherwise)