When Is Closed Adoption the Best Option for a Child?

What reason, aside from a child's safety, would a closed adoption (versus an open adoption) ever be the best option for a child?

I do not ask this question for the sake of argument.

I am genuinely wondering.

This question popped into my mind the other night and won’t get out.

 I have racked my brain in wondering why a closed adoption would EVER be the best option for a child, unless his or her safety were at stake.   

Aside from safety, I struggle to find a compelling reason.

Please, share with me your reasons, if any -- that a closed adoption would be in the child's best interest.

I'm listening... 

*Photo courtesy of freedigitalphotos.net