Don't you just LOVE reading even more now?! I know I do and it is exactly like you said, I do not miss holding the book at all.
I did the same as you, as soon as I finished my book I couldn't wait to start on the next one. I have read more in the last month or so then I have in the last year.
I've mentioned this before but I'll say it again...I had a guy I work with say but don't you miss holding that book in your hands and I looked him straight in the face and said no I don't!