I'm not sure why I'm replying as there appears to be only me and you contributing to this forum! E-mail might be a better medium.
Anyway, both formats have their pluses and minuses. I am an avid reader and until relatively recently I would buy books to read while commuting to/from work. This presented problems as I don't have space for storing all the books. I ended up passing them onto friends or giving them to charity.
Things changed when I was given a Kindle as a present. While I have probably aquired far more books the physical storage space has remained the same.
I'm saying acquired here as it is a mixture of books that I have actually purchased and books that are free to download. The Kindle is a superb device for reading novels. It can also render black and white diagrams but I have yet to see any in any of the e-books I have acquired. What makes it a joy to use compared to a computer screen is the portability of the device and the quality of the text on the screen. I can and indeed have been able to read my kindle in strong sunlight outdoors.
One of the things I do miss about the physical book is that you automatically know how far through the book you are. I know this may seem odd but as I get towards the end of a book my expectations of what the story will deliver in the next few pages change. With the Kindle you don't get page numbers when reading you get a percentage. This is not very helpful as 90% of a 100 page book means that there is 10 pages to go, while 90% of a 1000 page book means there are 100 pages to go.
When reading novels I have to say that I prefer my Kindle. Part of this may be due to the fact that I don't often re-read novels. I seem to treat novels as a disposable item. This may be a habit I have got into having been forced to give away most of the books i have read. This might change as with the Kindle I don't have to get rid of the books so I can keep them for re-reading at a later date.