"Great minds discuss ideas; average minds discuss events; small minds discuss people." - Eleanor Roosevelt
A great many people are uncomfortable discussing ideas because they don't really have any, all they can talk about is people and if they really strain they can maybe talk about events.
It's difficult not to just veg out on many people, their conversation lacks any kind of spark of creativity.
I was (unwillingly) listening to one side of a phone conversation the other day, the person on the end I was physically present for is someone who almost never stops talking, their big complaint of the conversation was that people can't just listen, they have to interrupt.
If you don't interrupt this person you'll never get a chance to say anything and they are horrible about interrupting anyone else who happens to be speaking, I feel like I'm standing under a waterfall of words pounding on my skull almost every time I talk to them. They also like to make eye contact and get really close, practically nose to nose and it triggers my flight or fight reflex unless I deliberately suppress it.