Us en deixo un tast:
Now we can see why friendship has become the characteristically modern relationship. Modernity believes in equality, and friendships, unlike traditional relationships, are egalitarian. Modernity believes in individualism. Friendships serve no public purpose and exist independent of all other bonds. Modernity believes in choice. Friendships, unlike blood ties, are elective; indeed, the rise of friendship coincided with the shift away from arranged marriage. Modernity believes in self-expression. Friends, because we choose them, give us back an image of ourselves. Modernity believes in freedom. Even modern marriage entails contractual obligations, but friendship involves no fixed commitments. The modern temper runs toward unrestricted fluidity and flexibility, the endless play of possibility, and so is perfectly suited to the informal, improvisational nature of friendship. We can be friends with whomever we want, however we want, for as long as we want.
(With a little help from my friends, The Beatles, 1967)