The Obvious Fall of a Villain

Author's Note: This is my prediction piece. I actually had this done for a while, I just forgot to post it.

Does the bad guy ever really win? I've been reading the Harry Potter series chronologically since 6th grade. Having read 5 of them and being on the brink of finishing the 6th, I think I've gained an understanding of the series at this point. With the 7th being the last book, there is a lot for it to wrap up. Although I'm not very informed about the book,  I practically know is going to happen. Voldemort is finally going to get defeated for good in some shape or form. 

Ever since the first book, Harry Potter has always had something to do with Voldemort revolved around the story or conflict. Whether it be the first book where Harry is just figuring out about Voldemort, or the 4th book where Harry meets him in his full, reborn form, he always seems to be relevant. With the 6th book, Harry learns the origin of Voldemort and lots of important information about him. This origin would obviously lead up to one big finale, otherwise it's placement would be practically pointless.

Furthermore, Harry has a burning hatred for Voldemort. He wants to avenge his parents and all the people he had crucially murdered.  He want's to end all the dark and depressing times in the wizarding world. Harry always get's a fierce-full heroic rage whenever he battles him.  You can tell he's not going down without a fight and isn't going to let Voldemort win.

For the most part, if you look at almost any story you'll find that the antagonists will always be defeated within the final chapter of the series especially in fantasy. A good example is the Emperor from Star Wars. Similar to Voldemort in the sense of being an evil, pale, nearly inhuman being always seeking power and death; The Emperor was eventually thrown over by the end of the trilogy. The bad guys pretty much never win in these type of situations. 

I know Voldemort is going to lose. How exactly? I'm honestly not completely sure but from what I've heard and knowing J.K. Rowling, it's going to be something I would have never predicted in a million years.  All I know is that it's going to happen. Who would blatantly have the main character die to the villain?