If we're talking about convenience, then I'd prefer eBooks. However, I've never used one before, so I'm just choosing and comparing based on what I see outside of my experience. A lot of people like reading hard copies and collecting the books, more like a sentimental thing, and others prefer eBooks just because it wouldn't take up space at home and it's just as portable as when you bring a book with you. I'd prefer eBooks not only because of that, but because if I accumulate enough books at home (like we do now at my father's place), it's just gonna take up space and quietly accumulate dust in the corner, and that would be a problem for my allergies.