It is true that many creative people fail to make mature personal relationships, and some are extremely isolated. It is also true that, in some instances, trauma, the shape of early separation or bereavement, has steered the potentially creative person toward developing aspects of his personality which can find fulfillment in comparative isolation. But this does not mean that solitary, creative pursuits are themselves patological.
[A]voidance behavior is a response designed to protect the infant from behavioral disorganization. If we transfer this concept to adult life, we can see that an avoidant infant might very well develop into a person whose principal need was to find some kind of meaning and order in life which was not entirely, or even chiefly, dependent upon interpersonal relatioships.
Anthony Storr, "Solitude: A return to the self"
Whether I shall turn out to be the hero of my own life, or whether that station will be held by anybody else, these pages must show.
Charles Dickens, "David Copperfield"
Cause being alone is the best way to be; when I'm by myself nobody else can say goodbye.