Well, brain is used sometimes when curing animal hides so they don't rot.

[Not that he had much experience with hunting, but his previous boyfriend did.]

Or maybe it just provides sustenance so that what ever semblance of life I might have will be enough to keep the flies and bacteria from breaking down my flesh.

[Or it had, before the neurotriptaline made him aware of what he was doing...and seemed to provide quite a bit more life than eating brains ever had.]