I've said it before and I'll say it again:
Isn't it obvious? This is a CHILD, not a CHOICE!
Methods that fail to respect the dignity and value of the person must always be avoided--in particular of attempts at human cloning with a view to obtaining organs for transplants.
These techniques, insofar as they involve the manipulation and destruction of human embryos, are not morally acceptable, even when their proposed goal is good in itself.
What is technically possible is not for that reason alone morally admissible.