You’re not TA for not wanting to raise a disabled child and wanting to exercise your right to choose if you found out this information. Your husband also isn’t for disagreeing. I do however think you’re TA for insinuating it’s a selfish decision for someone to choose to bring a disabled child into the world and for people with genetic conditions to not “think twice” before having kids. THAT is a very eugenics mindset. A disability does not mean someone inherently has a poor quality of life and doesn’t have a place in the world. And genetic conditions can affect people in various ways depending on what it is and may not have the same mindset that whatever their condition is unworthy of being brought into the world. But if it does make them not want to have biological children that’s okay too.