And I also collect first editions, some signed, that are my treasures. :-)
The importance of this alone dwarfs all other reasons! I have books that will never be on the Internet; and, they are critical works for both literary and life-sustaining reasons.
Internet works are typically shallow, certainly not all-inclusive. Many of them are circular links to incomplete material.
One case in point: Microsoft software documentation had usable content when it was organized and printed on paper. Their paperless documentation is mostly useless.
This goes on and on: There are no decent Internet materials regarding the machine shop or wood shop. Oh, there is a lot there, but not the in-depth quality of some of the 1900's books on the subjects.