> The tragedy of the modern library is that no one has the attention span for old books.

Fixed that to mean what you say.

Luckily, people still have the attention for good books. Which is why libraries still stock good books, classic or otherwise. They also stock books that people want to read. Which might seem odd until you realize that libraries are there for the community to use.

However, you are free to setup a library that stores books that no one reads.