PAA:
But they took the rejects. It may not be as bad as I make it out to be, but I personally would be devastated to be sorted into Hufflepuff, due to the implications.
It is interesting when you consider Hogwarts’ view on a persons ability to change. Does the Hat look into somebody’s future, their state of mind, their preference, or their deepest character. I would assume the latter, but what if a person changes, and finds themselves in a House they are unhappy with? Does the Hat take this into account, and also look into some other aspects, such as those mentioned above?