In my weekly Bible study, two of our older members-(widow & widower) who met each other & married recently...
..each has a Down's syndrome adult child...one in his 30's and one in his 50's....
They are quiet, respectful, sweet, helpful and go with their parents on 'mission trips' and work very hard at what they can do.
They are lovely and so are the parents!
I was unaware that they could live that long. My understanding was that they usually didn't make it out of 20s due to congenital heart issues.