Is it common to go through life simply not wanting friends but still a nice person?

[introverted]

Human beings like most mammals are social creatures
http://grattan.edu.au/static/files/asset...cities.pdf
http://www.aipmm.com/anthropology/2010/0...mals-1.php

To quote Aristotle -
“Man is by nature a social animal; an individual who is unsocial naturally and not accidentally is either beneath our notice or more than human. Society is something that precedes the individual. Anyone who either cannot lead the common life or is so self-sufficient as not to need to, and therefore does not partake of society, is either a beast or a god. ”

"The term "schizoid" coined in 1908 by Eugen Bleuler designates a human tendency to direct attention toward one's inner life and away from the external world, a concept akin to introversion in that it was not viewed in terms of psychopathology. Bleuler labeled the exaggeration of this tendency “schizoid personality". Characterized by a lack of interest in social relationships, a tendency towards a solitary lifestyle, secretiveness, emotional coldness and apathy. Description of observable schizoid behaviors, which he organized into three groups of characteristics:
1.unsociability, quietness, reservedness, seriousness, eccentricity
2.timidity, shyness with feelings, sensitivity, nervousness, excitability
3.pliability, honesty, indifference, silence, cold emotional attitudes
http://en.wikipedia.org/wiki/Schizoid_pe...y_disorder

Extreme introversion - http://www.schizoids.info/
“defined by underactivity, slowness, lack of conversation, lack of friends, avoidance of others, carelessness about appearance, and lack of interests”
Avolition - (lack of motivation) avolition for daily-life and social activities
Asociality (lack of a desire to form relationships)
Affect - (lack of expression) blunted, flat deficit in emotion
A core defect in emotional experience, at a higher level, caused poor motivation, which was observable as indifference and lack of interest. The affective deficit drove an absence of pleasure (anhedonia) from activities and, more fundamentally, an absence of boredom, which together caused the “complete loss of volitional impulse.” The absence of a “desire for activity” produces the indifference to the external world and to themselves