We like to think we are good at judging other people.  Yet every time some mass murderer with a dozen bodies in his basement is caught or some child molester who kept kids locked in cages in his garage is caught what do we hear when reporters question the neighbors?

• "He was such a nice, quiet person I would never have suspected him of anything like that."
• "He was polite and went to church, I never suspected he was the one."

And why do we always here that?  Because we judge others based on a distorted and invalid set of criteria.  Specifically, what we like about ourselfs we think is good in others and what we don't like about ourselves we think is wrong in others.  The flaws we forgive in ourselves, we forgive in others, but those we can't forgive in ourselves are those we can't forgive in others.  
    The solution to this is simple.  Don't judge others.  You don't know them.  You don't know where they are emotionally, intellectually and spiritually and without such knowledge you can't judge them.  So just accept that others are not the same as you and stop judging.