According to this study by Scholastic, when it comes to sharing books and reading before bed, kids prefer print to digital.
In the fourth edition of the Kids & Family Reading Report, researchers asked kids ages 6-17 and their parents about their reading habits for both electronic and printed books. From the study: Kids say that ebooks are better than print books when they do not want their friends to know what they are reading, and when they are out and about traveling. Print books are seen by kids as better for sharing with friends and reading at bedtime.
In our house, the rule is no ebooks/iPad at bedtime, only print for our 6 and 3 year-old. There’s just something missing when you “curl up” with your kids and the iPad. However, I do agree with this mother of a 6 year-old boy quoted in the study, “As long as he is reading that is what’s important. If he prefers ebooks that is fine with me. I think more kids will be reading ebooks and he should be comfortable with both.”