There are a few. But the disadvantages don’t outweigh the advantages.
Space
Overflowing bookshelf (or bookshelves), anyone?
Handling
Meaning you treat books better than you treat yourself.
Cost
$10 for a book isn’t much but multiple that by 367 or 2149…
I honestly can’t think of any others.
Plus I don’t mind the lack of room and I can handle the handling.
It’s a good thing my memory sucks. I won’t ever know how much I spent on books. Oh well. I can live.