If you find out someone wasn’t as great as you had thought

would you judge a person based on her past

If you find out someone wasn't as great as you had thought, what would you do? Would you think that "oh, she/he is just as imperfect as I am." Or would you think that "omg, what an asshole! I can't believe she/he did that!" Would you think that "ah it's ok she/he is just a…