By that standard, I ought not be able to use the card to buy booze (might give it to a minor or use for a Molotov Cocktail) a gun (obviously could use for crime) , and probably a million other things they let people buy with cards.

The library lends e-books, I have had good luck with their selections. I try not to buy books and still end up with more of them than I want. Mostly because I like graphic novels on paper.