Cooper: We used to look up at the sky and wonder at our place in the stars, now we just look down and worry about our place in the dirt.
Cooper: Mankind was born on Earth. It was never meant to die here.
CASE: This is not possible.
Cooper: No. It's necessary.
Doyle: You can't just think about your family. You have to think bigger than that.
Cooper: I'm thinking about my family and millions of other families.
Dr. Brand: Do not go gentle into that good night; Old age should burn and rave at close of day. Rage, rage against the dying of the light.
Answer: Cooper would have already met his other family members (grandchildren and great-grandchildren) when they first arrived at the space station and before going in to see the frail Murph, who made the trip while in-stasis. Because she is so frail, everyone would discuss beforehand how the meeting should proceed. Also, it is already a long-running movie, and adding an extended "meet and greet" scene would drag out the ending and lessen the emotional reunion between Cooper and Murph.
raywest ★