Friends come and go in life. It is the difference that these friends make in your life that makes it so exciting and interesting sometimes. There is no way to deny that it has been great knowing so many people in life.
I think I am fortunate enough to know some true and close friends --- people whom you can share your secrets, joys and sorrows with and who will be by your side when you need them but I have also come to see the true nature of some 'friends' --- people who make use of you and betray your trust in them, people who will make lives miserable for you when you least expected it and people who will talk bad behind you.
Life hurts, truth hurts and even friends hurt. No one knows how much agony and depressed you feel, they only see the joy, laughter and liveliness on your face.
Why do you live in such a cruel world full of agony and grief? You can choose to end all these before more truths begin to uncover themselves.