Whenever we forget things, is it that we choose to forget the bad, or is it to remember the good?
Daniel's chosen to forget his gory past, chosen to forget the faces of those he's so wrongfully murdered, chosen to forget the reflection of his face in the blood of the tortured. Though we can't always suppress such memories, as our minds always find ways to bring the bad back. Though when we forget the bad in our lives, sometimes we forget the most important things, as well.
(Reason for 2nd Submission: Redid some grammatical errors, and story holes. Plus, I explained almost all of the Amnesia universe, so even those who haven't played Amnesia should be able to understand. Please don't scold me, mods!)