Adoption of mentally impaired babies

[Amarok]

How do you guys feel about a couple who, upon learning their unborn baby had a mental impairment such as Down Syndrome (or other), decide to look for a good family to adopt their baby? Apparently there are people out there who feel a calling and have a passion for special needs children, and who specifically look for these types of babies to adopt. 

Let me also say that this pregnant couple has the financial means and plenty of support to take care of a mentally impaired child. But the reason they want to put their child up for adoption is because they feel like emotionally/mentally they just wouldn't be able to handle the grief and heartache that would come from seeing their child struggle through life.   

So, do you think it's wrong for the pregnant couple to choose to put their baby up for adoption in this case? Would you judge them? How do you feel about this type of decision?

(bolded to emphasize this would be about finding a loving adopted family prior to the birth, NOT leaving the child in an orphanage)

In my professional experience a mentally distressed parent is a dangerous parent. On the other hand adoption is traumatic no matter what for all our culture loves to paint it as a light and fuzzy notion it must always be remembered that this is only  happening because something has gone wrong . As for judgement that's not my job my job is to mediate the circumstances as much as possible to the benefit of all.