I feel like the black cloud of doom when I walk into a room. I don't really want to talk about DS with my friends who have healthy kiddos because I'm such a freaking downer. Good to know I am not alone!
As for the OP, I agree completely with AuntLavender. I think our society is constantly expecting that we justify things to others about anything that is different from the norm-- some people feel ENTITLED to an explanation. Oh, and that anyone who is different should feel guilty about it. However, that sense of entitlement is false. No one needs to know anything about your child, you, your family, etc. unless you WANT to share.