Sweetleaf wrote:
I think it depends on the individual and how severe their case of autism or downs syndrome is.
This, essentially.
I've worked with children with Down's Syndrome, and children with very severe autism plus severe learning disabilities. Either group could be socialised with fairly well... well, they couldn't, because of communication difficulties, but they would happily try and wouldn't realise that they made errors (and no doubt about it, the Downs children made as many errors as the autistic children!).
On one hand, I am almost certainly "less disabled" than the typical child with Downs syndrome. On the other hand, someone with mosaic Downs Syndrome is probably going to be "less disabled" than an autistic child with learning difficulties.
It is a stereotype to say all people with Downs are happy. I've never had a conversation with an adult with Downs syndrome, but even amongst the pre-pubescent Downs children I have talked to, they don't all have a sunny disposition. However, I think severe sensory issues can be unbelievably distressing for autistic people (but especially "low functioning" individuals if they don't understand the stimuli), which could mean autistic people are less likely to be happy.
Ultimately, I'd look at life expectancy. A baby born with Downs Syndrome has a life expectancy of 50-60 (
source). Autism itself does not affect life expectancy, though we are more likely to be murdered or commit suicide (
source). Obviously quantity of life isn't everything, but I would argue this makes Downs objectively bad, even
if we allow for increased quality of life (which is highly debatable).
Pre-natal screening... personally, I'd like to think it would affect my decision. There will probably never be a decision to make, but I currently plan on having one child and wouldn't choose to screen for either condition (though I would try and minimise our risk of the foetus developing either). More widely, I think people would be perfectly within their rights to screen for either. I think people are perfectly within their rights to abort for any reason except the child's sex (simply because we need to maintain close to a 1:1 ratio).