It's been happening to all of us, but ever since the Harry Potter series ended sadness has gripped the fandom, as if a pack of Dementors had been let free on the entire Harry Potter nation.
Then again, if Harry Potter was truly over, you probably wouldn't be frequenting this website. ;)
Check out this video in which Potter fans Luca, Hannah, Morgan and Barbra rather funnily lament over their depression at the series closing, and then act out several powerful scenes from the books. If the music in the background sounds somewhat familiar to you, then you are probably a gamer, as it comes straight from the soundtrack of Halo: Reach which was composed by Martin O'donnell and Michael Salvatori.