I found a website to where you can permanently delete your Facebook profile: http://www.pcmag.com/article2/0,2817,2342599,00.asp It takes 14 days to be deleted permanently. You also have a chance to recover that page if ever you decide to change your mind within the two weeks of deletion.
I think this website might have been the reason why Facebook does memories now. LOL.. They probably didn’t want anyone to permanently delete their accounts. Who doesn’t love a little nostalgia?