No matter how many times we are told not to judge or to first pluck out the log in our eyes before plucking out the speck in another's we still judge and criticise.
We criticise and judge, not to help the person; hardly because of that. We criticise and judge more to show that we're better than the person or more important than the person.
If you listen to people criticising other people, you'll realise that they are basically just trying to put down the person.
But people should realise that to belittle is to be little.
So as smart as you feel you are while criticising others, you look more pitiful; you look low and little because to those listening on the outside your faults could be just as disgusting as the one you're criticising coupled with the fact that when you criticise, you open yourself for criticism.
We all have faults and no one's fault is less or more than the next person's. Instead of always trying to assess the next person, you should spend time assessing yourself and try improving yourself. It will make the world a happier place.