I suppose we don’t need friends and friendship, and we can live without, but what kind of life is that?
If we had a life without difficulty we would have trouble appreciating our good fortune, and just as likely, a series of experiences without adversaries or adversity would render us unable to recognize the difference between acquaintances and friends, or the value friendship brings when we have it, and the even higher value when we give it.
We learn how to make friends at a young age, and if we fail to do that very well, then building friendships is a challenge for the rest of our lives.
Friendship is unnecessary, like philosophy, like art... It has no survival value; rather it is one of those things that give value to survival. – C.S. Lewis