Please tell me what this quoted B sentence means under the context. Thank you.
A：My kids come home, grab somthing to eat, and then run off again. I never see them.
B: Oh, I know. " Whatever happened to family dinners? "
A: Yeah. I don't think families spend enough time together.

Question

Please tell me what this quoted B sentence means under the context. Thank you.
A：My kids come home, grab somthing to eat, and then run off again. I never see them.
B: Oh, I know.  "   Whatever happened to family dinners?   "
A: Yeah. I don't think families spend enough time together.

Answer

We use the phrase 'Whatever happened to xxxx'?' as a kind of rhetorical question, to show regret about something good which has disappeared. It's a rhetorical question because everybody knows the answer - in this case both speakers acknowledge the fact that families nowdays are often too busy to have dinners together.

Another example might be if you see a situation where people are being rude - not saying excuse me, thank you or sorry - someone might remark 'Whatever happened to good manners?'

Answer

Just a comment, we say 'in this context' but not 'under this context'.
What does this sentence mean in this context?
Please me tell what this sentence means in this context?