Other than that, I often read on the (crowded) subway ride to work. Carrying a 600 page book is often a pain in the ass, compared to the lightweight feeling of my Kindle.
On the other hand, I completely relate to the pleasure of the physical page. I also enjoy very much watching my collection of books slowly expand on my shelves.
I wish there were a model where buying a physical copy of the book would entitle you to the digital one or vice-versa. I think both have their advantages in different situations.
However, when I'm searching for something precise, a google search / help documentation usually suffices. When I'm reading a book, it's generally in search of more deep understanding or just the process of learning in general - i.e. more long-form learning. For the latter I would still prefer printed.
It's still not quite up to the standard of flipping back and forth in a book, but it's tolerable. I've also changed my reading flow to make a lot more bookmarks of interesting parts of the book, and use search more. Given the other advantages (portability, price of books) it's a solution that's working out really well for me, and allows me to read a lot more technical books than I would if I had to lug them about in print form.