Boredom can easily strike anyone at any time of the day. No matter how interesting things can be, it can still become boring if done over and over again. And all people need to loosen up and have time to exercise their creative side and one of the easiest
That's the intresting point, 'cause the books' main charackter is Elena. While Elena (Nina) was in the series, and Stefan is lived (like vampire) and before the ending this series was still Elena's storyline.