Has Been being someone who followed their dream, achieved success, then for whatever reason fell from grace or out of fashion.
Never Was being someone who had a dream but chose not to pursue it--due to lack of motivation, lack of confidence or fear of failure (to name three possible reasons).
The Has Been lived the dream then had it ripped away. I imagine some people handle it better than others. Maybe they find joy in retirement. Or maybe they explore new passions.
Then there are those who just can't let go. They cling to the past, hoping for a come back. They link their happiness to who they were, because, well, who they are now is just too dang depressing.
On the other hand, the Never Was lives with regret.
What if I'd had the courage to go to that interview/audition? If only I'd tried. Maybe I was good enough. Maybe I did have what it takes. What if? If only?
So which is worse? I'm hard pressed to say. But exploring both instances is indeed... interesting.