I don't think there's a need to think twice. We just covered genetics in biology.

My teacher asked us, "If you knew that if you had a child, it could potentially have a serious illness, deformity, or mental illness all throughout it's life, would you have one?"

The majority of the class said no - but he said, "Why not? If you knew there was treatment, or help and aid that you could get - why not?"

My Mom is a TA at a school at works with an autistic boy - he is such a funny kid, and quite clever in different ways than the other children - still making him a smart little guy!

I would just ignore what your MIL has to say - it's not her child, it's not her decision.

Quote Originally Posted by Samantha Puppy
Human genetics is a crap shoot. You never know what you're going to get.
Clearly you haven't studied genetics in biology lately. It's not a "crap shoot". Ever heard of a punnet square? Or doing a chromosome examination? (maybe not the scientific title - but that's what my bio teacher called it"). There are many different tests that can be done to determine the chances of a child(ren) having different problems - all of them very accurate!!