What understanding?

I was sitting on my bed. Suddenly this question pop out of my mind.

People, what is 'understanding' means to you?

I encountered with fews situation that someone don't understand your feeling, don't understand your good and bad.
And some of them they even thinks themselves are the super duper best. I REALLY DON'T UNDERSTAND WHY.

And don't use a word 'cheap' on thing that give by ppl, becoz urself is actually mean nothing to other, u are not understand enough on ppl's stuff. AND I JUST WANT U TO KNOW, CHEAP OR HIGH CLASS IS DEPENDS ON YOUR ATTITUDE.