I'm still collecting physical media but I'm open to the idea of switching to digital formats eventually. We'll see. Currently, the 1080p versions of films offered by iTunes are good and comparable to their Blu-ray equivalents, but I think the Blu-ray discs typically yield a stronger transfer (I still rent movies via iTunes all the time, though, and it's also how I watch many TV shows). A real equivalency between the formats would be necessary.
Also, Apple TV ought to accommodate physical storage options, as streaming your TV and movie collection requires a lot of bandwidth. Beyond the transfers, there's also a discrepancy when it comes to Blu-ray supplemental features versus the small amount of extras that sometimes accompany iTunes releases. A selection of Criterion films are on iTunes, and being able to rent them is a great and less costly way of viewing their library. Still, none of the iTunes versions are accompanied by any special features.
My other reservations concern comic books. The printed comic book offers a standard that will likely cohere with the artist's intentions (maybe this is a dubious assumption) in terms of, for instance, the particular vibrancy of certain colours. When you view art on something like an iPad Air or an iMac screen, isn't there a risk that the colour palette of any given page might be distorted or that it will be rendered somehow incongruent with the intended design?
I have less reservations about acquiring digital books but I do enjoy the tactile and sensory pleasures of flipping through a physical book. These are secondary pleasures, and this is also hardly a novel point, but it's still important. Then again, I'm very attracted to the idea of not having to worry about damaging my books in any way.
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Quoting D_Davis 
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