I once read this book, I don't remember what the title is, but it broke friendship into three categories:
friends for pleasure. this is the ultimate level of friendship, according to the book, because you purely enjoy the person's company.
friends for utility
friends for group something else ( i don't remember)
what are your take on what a friend is?
(i feel like i have started a thread like this before, or maybe someone else have already started one already. if it has already been started, could you point me in the right direction?)