I am the parent of a 21 yo son with Down Syndrome. That means he has 3 #21 chromosomes which causes mental retardation - his IQ is around 70 or so.
You know, I can see how his birth and life have taught me so many perfect lessons - too numerous to mention.
I remember after we found out that he had Down Syndrome, my mind went through scenario after scenario of how horrible his life was going to be - all the problems he'd experience, he'd never get married, he'd never do this or that or the other thing. Then I re-thought it and realized I couldn't predict anything about him or his sister. She is the one who's had a lot of difficulties so far in her life!
I can also see the huge number of people who have been influenced by him. I can't tell you how many teachers and students from his school as well as many, many other people have told me how much they love him.
I believe that he is here to teach people - compassion, forgiveness and how to live a life where worries don't exist.
He never worries. He forgives quickly (or just forgets why he's mad). He loves people. He loves to make people laugh. He's quick to say he's sorry. He says thank you a lot. His life is pretty much taken care of - he has people helping him find a job, he has door-to-door bus transportation, he has free medical care.
That's not to say he doesn't have stubborn moments and never gets angry - he does but he never stays that way for long.