Originally Posted by Jellby
They offer an opportunity to pause and relax, think about you've read so far, and think about what's coming next. A new chapter usually means some kind of break in the story, a chapter header, ornament and drop may help creating that "break" in your mood.
I like simple chapter headers but for me the other stuff detracts - maybe because some of it is taken from hardback paper layout & does not scale well into e-reader space.
And as the thread has shown there is no robust cross platform solution for epub & mobi. I'm also pretty sure that an epub-to-epub conversion in calibre - when done for other clean-up reasons, sometimes garbles the ornamental stuff.
I don't mind being the minority view here.