Hunger Games. Walking Dead. 50 Shades of Grey. Am I doing something wrong?

Teenage dystopia.  Zombies.  Mommy Porn.  LIE -- ?? Some days I think that I should  just combine end-of-the-world, fleshing-eating, ebook x-rated fun -- and write that book.  Don't get me wrong, I am thrilled with the response from readers and critics that I have received for LIE, my contemporary, realistic, young adult novel about the impact of a brutal hate crime.  But at the same time, when one glances at amazon's "top 100" list -- and what writer doesn't occasionally?-- or, the NY Times Book Review, and try as one might, like a gambler, one compulsively runs down the scores, I mean the bestseller lists, one has to think: do I jump on that writing bandwagon?  Thing is I loved the Hunger Games -- read the entire series.  I plan to see the movie this Friday.  I watch "The Walking Dead" and cheer --for zombies. I am debating whether to read the mommy porn -- several hundred pages of hot, steamy sex sounds exhausting. By the way, if you haven't checked, the top bestsellers on amazon are the Hunger Game books, Walking Dead books and the 50 Shades series...   So those are the thoughts before the school bus arrives, as I ponder what to write next. Any thoughts out there on trends in books these days?  Truly, the author of LIE.