Warning that having amnio creates a risk of miscarriage. I'm pretty sure it is voluntary. You can't be forced to undergo a procedure that has risks.
I think the only reason to have amnio is if you would have an abortion if there were something wrong with the baby. I personally wouldn't risk a miscarriage just to check on the baby, when I would find out if there was anything wrong once I gave birth.
My husband cares for the disabled, including autistic children and children with down's syndrome, so if our child was handicapped, we would just deal with it. But that's just us. I'm not making a decision for anyone else.