The Nancy Drew Stories written by ghostwriters-Isn't it an insult to Carolyn?   

Nancy Drew books were my addiction when I was a kid. I was lucky enough to have a class teacher who had the old and original Nancy Drew books like the Secret of the Old Clock, Mystery of Hollow Oak and others. It was the best time of my life, with all those books. After a few years, I had searched for Nancy Drew books in some shop and had found some that were Nancy Drew Books-58, 59 or something like that. And it was entirely a disastrous one. It didn't match up to the expectations!
I found out from the net that most of the later stories are written by Ghost Writers under her name. But after reading these stories, I just have one question in mind... Aren't these people insulting Carolyn Keene's stories? Isn't it defaming the author?
Isn't it making us lose our love for these books? And how are all these works passing through the Editor's hands? Don't you all feel bad about this?
Don't you feel that they should stop doing this?