Reply #3: If it may affect the performance of the post, then it's fair to ask.

[Dr Morbius]

Orientation has no bearing on how well a justice will interpret the Constitution. Hence, I consider it out of bounds. Neither do questions about being married or having kids have any bearing on how well a justice will adjudicate, I would say, unless private life would necessarily intrude into public life - such as an invalid family member who might absorb a justice's time.

It's fair to ask any nominee about things they said or rulings they've made, but inquiries about private life seem wrong to me. I wouldn't ask such questions were I a Senator.