While I certainly agree with the majority of comments here that the continuation novels typically pale in comparison to the Fleming originals, I also have personally enjoyed many of the continuation novels.
Gardner’s early work was very good (as was Scorpius), and I found myself really enjoying the final four Bensons (the first two weren’t exactly my cup of tea)-- I’d even rank High Time To Kill as one of my favorite Bond novels, and I found it far more original in concept and execution than many of the EON films.
Plus, I’ve seen most of the films dozens of times. You can mute it and I can recite the dialogue basically verbatim. The novels, on the other hand, given the sheer number of them (and the fact that it takes me longer to get through a novel than a film) means there are a plethora of new adventures for me to explore, and re-reading those that I’ve already read feels fresher than re-watching a film I’ve seen maybe forty times.
Having finished Amis, Gardner, Benson, Faulks, Deaver, and Horowitz, I still have others left to explore-- Boyd, Higson, Cole, Weinberg, Wood, and Pearson.
More isn’t always better, but I definitely appreciate being able to delve into new Bond adventures on a consistent basis.
I think the real need now is for consistency in the author department. I’m glad we’re getting another Horowitz installment-- bucking the trend of these one-and-done experiments that IFP have been into these past few years.