Actually anyone who knows for a fact that a serious healthy condition runs in their family line should really think 10 times before bearing children.
Offsprings born with this condition will suffer physically, emotionally and mental. The family will bear heavy financial and emotional burdens.
Consider that a child born stricken with such serious health condition is innocent but needs to endure a long painful journey in this world.
Sorry if this sounds insensitive but we cannot deny the stark and harsh realities of this world:(.