Is she wrong?

if you knew that you every kid you have is going to have a rare genetic disorder would you keep having kids? My cousin keeps having kids and they will all suffer from this condition. I just don't understand how she can keep doing it. Watching her kids hurt almost everyday. Constantly going to different doctors. A new problem or surgery every week. I feel like she is just being selfish and that a part of her likes the attention that she gets from it because she is CONSTANTLY posting every little problem on facebook. EDIT: Any child she has with her husband will have this condition. They're going on baby #4. They are in pain EVERY day. They can live a normal life but will have difficulties. I think her oldest is 6 or 7 and already needs a wheel chair. it can cause them to die earlier than normal.