Devient, my heart goes out to you, because you are living something very difficult, with a son who doesn't fit the 'sweet good-natured Downs syndrome child' stereotype (which is not surprising, given it is a stereotype). I think there are lots of positive news stories about Downs syndrome around these days, several journalists (is it Simon Barnes?) have children with Downs syndrome and I have seen many stories along the lines of 'I'm so lucky to have my child with Downs syndrome, he's taught me so much etc'. If you go on the Downs syndrome association website it is full of such positive stories, and I do find them inspiring. And, of course, these are true stories and I'm glad that they are out there, so that people realise that many people with Downs syndrome can live interesting and fulfilling lives, have relationships and so on.
But of course, in the desire to redress the balance, and to make people aware that Downs syndrome is not necessarily a tragedy, some difficult stories have been swept aside. My friend who recently had a Downs syndrome baby spends many hours a day just tending to his other health needs which are multiple and severe. And as I say, the other person I know with Downs syndrome is hyper-aggressive, like a toddler in a very large 45 year olds body. So, these are not rare cases, they are the reality of some peoples lives. And, having seen my friend struggle, it has made me think twice about whether I could cope, or should have the test, whereas in the past, when I encountered people with Downs syndrome as a child who were much more independent and really very happy in their lives.
One story doesn't cover all the eventualities, and that's the point: you never know what you are going to end up dealing with when you have a child, and that is as true of children with Downs syndrome as without.