The truth is, plenty of people go to libraries. By my local library's annual 2017 report, they have 625,000 active library card holders which collectively visited the library over 10 million times. [1]

This is one of the busiest library systems in the country, but shows that, at least within a local region, libraries may be heavily used.

[1] https://kcls.org/wp-content/uploads/sites/20/2018/03/2017-Ye...