It depends on your definition of "worth", doesn't it? If you are a true biblioholic, it's a compulsion, so worth becomes meaningless. You just read. Full stop. And there are novels that are more interesting than others, or more meaningful than others, but that doesn't matter: you need to read.
While I may be a biblioholic, I'm not confined to novels (although neither are the gentlemen of whom Henderson writes). Thanks to my job, I read a lot of YA Lit -- do those qualify as novels (TTYL, I'm talking to you!)? Novels are supposed to be more "highbrow" than genre fiction, so Ink Exchange (the last book off Mt. Bookpile) doesn't qualify. Ditto Death of a Dormouse.
Still, this comment from Literary Saloon
Obviously any judgment depends very much on the novels -- five Tolstoys (and equivalents) a week is one thing, five of the novels Hensher was presumably reading when he was five quite another. As to whether life's too short for this sort of commitment ... surely that also depends on what the alternatives are. But if we make our way through less than five novels in a given week we feel we've missed something .....sums it up. Except I'd edit it to "if we make our way through less than five books in a given week...". Wouldn't you?