Hmmm ... so I've finished viewing the series.
I've heard there have been fans who've complained about its ending, yet I'm satisfied its outcome.
As I look back on it, this is not meant to be anything but what it seems, a story of folks fighting for power, control, self-control, survival, and most not being able to rise above their pasts, and if they do, just barely. It is also a story of making choices, and in situations where the choices don't seem to be too good, no matter which choice is chosen. And it is about struggle, as a result of other's choices being made, and having to live with the results of those choices, and how emotions can bring about one's downfall as a result of acting on those emotions, instead of slowing down long enough to be able to move forward in a healthy way.
There's probably more to it than this, yet this is what is coming to mind in the current moment.