The feel-good world of Harry Potter takes an unusually dark turn in the last movies. Voldemort renders Hogwarts unrecognizable, and Harry and his friends are in a seemingly unwinnable fight against evil. And there's death. Oh, is there death.
Not only do we have to deal with the unimaginable loss of Dumbledore, but we also lose Snape, too. There are other casualties, including Fred and Lupin. All in all, the end of the series is pretty darn depressing.
What makes Snape's death even worse is that we've finally learned the truth about him. Despite his harsh demeanor, Snape has a heart. And when we learn about his past with Lily, we can't help but love Snape. Would J. K. Rowling humanize him, just so she could then kill him and break our hearts?
Der GottKaiser's theory is pretty solid: "Just think about it, do you really think a POTIONS MASTER wouldn't have access to anti-venom? You think he wouldn't have prepared for the possibility that Voldemort's snake might turn on him? He was playing a dangerous role as a spy, Voldemort could turn on him at any moment, I think Snape would have obviously taken some kind of prophylactic antidote beforehand."
But there's more evidence to support this theory. Der GottKaiser wrote, "Snape's corpse isn't found or mentioned: After the big battle, they lay out all the bodies, all the people who died, even the death eaters' [sic] and Voldemort's. Harry sees Lupin's and Fred's body, but Snape's body isn't there."
Snape made a monumental sacrifice, but it's largely unnoticed. Harry doesn't even mention it. "You'd think Harry would have told everyone about Snape's sacrifice so they can find his body too. But nope, Snape's corpse isn't found."
There's another reason to believe that Snape isn't dead. When Harry uses the Resurrection Stone, he's surrounded by people who are important to him. Der GottKaiser wrote, "You'd think Snape was very important to Harry, he loved his mother, gave his life to save him, and shielded him all his life. Harry just found out how Snape had been protecting him the whole time and died to save him, so when he used the magic ring that brings the spirits of dead people, you'd think Snape would be there."
When you think about it, Snape had everything necessary to protect himself. He had access to supplies, and he knew the potions he would need for protection. Wouldn't he have anticipated possibly being bitten by Voldemort's snake?
There's plenty of evidence here to suggest that Snape lives on. Between his knowledge of potions, the fact that he doesn't appear when Harry uses the Resurrection Stone, and even the simple fact that his body is never found or mentioned makes us wonder if Snape really died after all.
Perhaps he lives on, continuing to look out for Harry.