My girlfriends first older brother was one of those babies, the second one survived but is disfigured and needs serious care to live. I had three such kids in my first class at school, four different ones in my second and a sizeable number of parents whose kids didn't survive childbirth. Not being allowed to eat certain mushrooms or digging in the woods was the easier part.

So this may be a bit more tangible for some people than for others.