People who are different are constantly dealing with families who don't understand them.
One of the things that frequently gets lost in descriptions of depression is that the depressed person often knows that it is a ludicrous condition to feel so disabled by the ordinary business of quotidian life.
Kids with Down syndrome are, by and large, quite affectionate and relatively guileless, and frequently, the attachments to them grow and deepen. And the meaning that parents find in it grows and deepens.
I'm attached to my children with whatever flaws they have, and if some glorious angel broke through the living room ceiling and offered to exchange them for other, better children, I'd cling to my kids and pray away this specter.
Sam J. Jones