system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] "The moment you drink the blood of a unicorn you will have a cursed life, a half life" what were the consequences for Quirrel or Voldemort from killing & drinking unicorn blood?

Quirrel seems to have born the brunt of it, but it makes me wonder if the process changed Voldemort in some way.
gpt
I imagine it's similar to the curse from Pirates of the Caribbean.

the light in your life fades away, the things that used to bring you joy no longer do so. food stops tasting so good, drink stops satisfying, company no longer fills the emptiness inside. you know something important, something that made you who you where as a bright young soul is now gone and only you remain. 

for Voldy it's probably not much of a curse at all, twisted as he was, but for Quirrel it must have been terrible.