I have found that eBooks have pros and cons. I like them better for fun rather than education. With the Nook and the Kindle it is a great way to have your library everywhere you go. I can see that it is very beneficial for someone who is an avid reader, like my brother-in-law. I have a couple of Dr. Seuss books on my iPhone for my son - he LOVES them because they read to him and have sound effects (by the way, he is only 4 months old!).
On the other hand, as far as eBooks at textbooks, I am not a huge fan. I purchased an eBook out of a "help I need my book now" situation and it was the biggest waste. First of all, the book expired so the money that I spent on it is now gone...and so is the book. Second, I could only view it on one computer. Thankfully I had downloaded the book to my laptop otherwise I could have only read it at my desk. Even then I could only read it on the computer; I couldn't just pull it out on a car ride. Third, I really do like being able to flip through the pages rather than scroll or click.
Some people really like eBooks. They are environmentally friendly and they do cost less. I cannot say that I am a huge fan. Even though my little one loves his iPhone versions of Dr. Seuss, nothing beats sitting down with the actual book for a bedtime story (plus if he chews on the pages it is cheaper to replace than the iPhone).