Do you know what it means to be a friend? It's not just someone you say hi to or have coffee with. I've always thought of a friend as someone I would make a sacrifice for or stand by them when they need it. Defending them when they are not there to defend themselves and never expecting anything in return for it but still knowing that they would do the same for me.
Most of what I see these days are people who say that they are friends but really they are to selfish to ever do anything for thier friends. Friendship is something that is earned, not aquired.
Think about what your friends have done for you. What have you done for them? How far do you think you will get by yourself, without your friends? How much further would you have gotten with your friends? What if we were all friends?
Just remember, you aquire many things every day in life that come and go, but a friend that you have earned is there for life.