If it's a generational gap it has nothing to do with thinking people must listen to me. It's about simply being a polite human. I know that's difficult for some people. Because the results are always the same. The people who don't care to listen because their self entitlement is so strong they can't comprehend others actually exist as well, they'll complain that "I wasn't told" When it's really you didn't listen.
"Hey, we're buying pizza for lunch. What kind do you want"
...
"Hey the pizza is here"
...
(Some time later) "Why did no one tell me about the pizza, it's all gone now" (continues the bitching about missing out for the rest of the day)
That's the problem with that attitude you're displaying. You think you're so important no one has anything if value to say, but then you don't accept the responsibility for your self absorbed attitude.
The fact that you don't see it is prime evidence of the problem. If you're living in your own world then live in it. Because you're also missing my comment that they themselves wouldn't want to be treated this way. Don't try and have it both ways that no one can talk to you, but others must listen to you.