No. I have no desire to be one either.
I'll remember to thank the Lord for that.
I am the father of an adult with DS. I am also the father of adult children with no discernible disability. Let me tell you something - EVERY child is a burden to his parents at some point or other and EVERY child disappoints his parents at some point. My son with Down Syndrome - he manages to let us down less than the rest of his siblings.
It's probably best to make sure of it then - Although having children sometimes softens even the toughest critic of how all other parents do things - which you seem to be fond of doing from a few other posts I've seen.