Why were many legends written about knights?

Many legends were written about knights so that the accounts of the deeds of the knights remained in some or the other form and inspired the coming generations by describing how great the knights were.

Explanation:

The idea of writing legends served the purpose of keeping the knights alive forever in writings that speak about their greatness. Sometimes, the legends were also written on the orders of the knights that performed some kind of courageous deed. The ones who wrote the legends often exaggerated the deeds of the knights in order to make the legend articulate and impressive.