Although digital sounds great for posterity, descendants are unlikely to access files, even if it's possible by then. A book can be found on a shelf without electronic access passwords or loss due to the platform where it was stored coming to an end. Files could be saved on SD cards etc. but again they might become redundant.
I think electronic backup is a good thing, but to keep the books as well is for me vital.
Although digital sounds great for posterity, descendants are unlikely to access files, even if it's possible by then. A book can be found on a shelf without electronic access passwords or loss due to the platform where it was stored coming to an end. Files could be saved on SD cards etc. but again they might become redundant.
I think electronic backup is a good thing, but to keep the books as well is for me vital.