It is not the detachment itself that is pathological but the degree of it. We all need a certain amount of detachment to funciton. What you have described sounds similiar to some of the issues that Karen Horney addresses when she talks about the three basic neurotic structures. This could also be seen as Schizoid Personality Disorder. Most of the relgions and spitualities suggest that even though we can be detached we still need to be a part of life. The detachment is meant to give us clearer vision (separation from ego) not separate us from people.