I do believe I know what you're talking about...
The tides of people looking for enjoyable conversations may wash the sand, but they do not replace it.
The need to strike up conversations is strong in many people, but it is only knowledge, wisdom, and understanding that matters in this sense. In other words, if you're talented, you will never need to make a new topic! No one can be replaced, but they can be irritated into submission. Every single person has a different purpose.