Should that always be considered a character flaw that needs fixing? I guess that's a question I've been asking myself my whole life... I'm often told I need to change and should be social, but my personality is only seen as a problem in the eyes of others. I'm perfectly happy being antisocial.
But I guess in my case I also expect nothing of others in return so I don't ask questions like OP. If I don't care for others then I can't expect others to care about me.