Great topic Finner!
I love eBooks for a number of reasons, the most important for me are:
- If you buy a book in beta, you will be getting up-to-the minute info and be able to access the book at every step of the way until the final release (and even then before the book goes in print)
- You will usually continue to get updates even after the print version is released
- If you have a Kindle or e-ink device, you can read it almost anywhere, and the experience is generally very good
Having said that, I recently purchased Programming Erlang as a print book and that was mainly because it was written by Joe Armstrong (one of the fathers of Erlang, who is unfortunately no long with us 
) and so it felt like there would be a little bit him here with me, however I’ve really enjoyed having a print book because it’s easier to highlight things - I usually write notes when reading a book but this hasn’t been needed with this book as I can simply go through the book again and just look through my highlights.
Here’s an example of one such highlight:
Going forward, I will probably continue to buy eBooks, not only are they better for the environment but I love all the benefits they have to offer (plus they are cheaper, and when you buy a lot of books like I do that can add up!)