The real meaning of friendship

Do you have a best friend?
True friends are rare. I say they do not exist. The only friends that you can have is your pets.
Just to explain my above statements, I will start off with the definition of friendship.
Friendship is a symbiotic relationship between two humans that exists as long as there is the need for the friendship. It is like a barter system where you exchange favours and expect them in return for your services.
Friendship is always selfish in nature. The only selfless friendship that can exist is between blood relationships. There is always a bit of self interest involved in any friendship.
Another thing that I should say is that the geographical distance between two "friends" matters a lot in deciding their extent of friendship. If two persons stay together, then they will have lot of disagreements, arguments and there will be practically no friendship. They will even start disliking each others actions and movements.
Consider another instance. If two persons who were close friends at some point of time have to separate, then their friendship will gradually lose that intimacy and after a period of time, it will be reduced to just an exchange of "Hi! How life" over emails once in a week or month. So, at any given point of time, virtually a person will never have the so called "true friend".
In this world, only money speaks. No one does anything for the other out of pure love or friendship. He/She does it only for the sake of getting back some favour one day. If he/she doesn’t get those expected favours, he/she feels disappointed.
Many youngsters who start going to colleges or stay away from home, look for a long lasting friendship with others, with whom they can share their fun, sorrows, jokes, etc. they want someone to whom they can trust their secrets. They need someone who can care for them, help them in all situations, etc. They start examining and evaluating others in their neighbourhood and start helping others so as to gain their attention and to find a friend. But very often, they are disappointed when they find that the friend they had trusted, turns hostile, or falls below their expectation in returning the favours. Sometimes this mistrust happens instantly and sometimes it may take lot of time. That is the reason why these poor chaps find themselves shifting from one friend to another, getting disappointed everywhere. They lose faith in others and start suspecting everything in the world. In some cases, it can go to extreme levels where they become a total skeptic of any guy/girl that they meet or who talks in a sweet manner.
I have some advice for all these heartbroken and disappointed students. I want them to know the meaning of friendship that I have stated before. First of all, do not have any expectation from anyone. Just remember that the person with you at the moment is the closest to you and is your friend. Just behave well with him and that's all. Expecting the same behaviour might result in a disappointment. And one should be careful to draw the line of trust between friends. One should not trust too much or reveal too many secrets to their pals.
If one wants to make friendship, one should create the need for him/her to the other person. For example, one can have the knowledge of some subjects that the other may not have and thus help him/her before exams. One can get the friends through money. One can have a good taste in shopping and thus have a demand for him/her during shopping. One can crack lot of jokes and make the conversation lively, thus pulling the other person. These all trivial things help you to avoid being alone and will always have someone with you. But again don’t make the mistake of conferring him/her as the status of a true friend. Friends exist as long as the demand exists. If you want someone to roam with you, you should have enough things with you to avoid getting the person bored.
Sometimes, rarely, it may happen that the friend becomes a true and ideal friend. But that is only the exception and not the rule. It might come as a bonus, when you don’t expect it.