What constitutes "Not having a life"

[Nomadic Mentor]

As others have said "having a life" is subjective. Only you can decided whether or not you "have a life." For me, my baseline is weather I bring value to my life and those of my friends. It seems to me that many think that there is only one correct way for "having a life" ...their way. This is an interesting question what constitutes a "life" in this relative sense. What is the common denominator between all different style of "having a life". Any one feel like doing a philosophical definition and analysis?