You can download free library books to a Kindle (or in my case, a tablet and phone with the Kindle ap) without ever leaving your couch. I read plenty of print books, but there is something truly decadent about spending a snowy or rainy day reading and when I finish one book, I can go to my library's website and download another.
The other thing I really like is that, while I read on my tablet at home, I can access the same books on my phone. If I find myself having to wait at a doctor's office or in line at the post office or whatever, I can pull out the phone and keep reading.