People who often read books should all use bookmarks. Moreover, nowadays when you buy books, many come with complimentary bookmarks. Although quite a few bookmarks have been used, there are probably none that are kept for long-term use and preservation. But it makes sense, as most bookmarks have nothing special about them, and after using them, they might be carelessly misplaced. If bookmarks could be designed to be as beautiful as this petal bookmark, I believe people would be reluctant to throw them away carelessly. Using these petals as bookmarks makes reading a much more pleasant experience.