There's always a sense of concern when a show you love so much is coming to a deliberate end. Will it live up to the standards that it had set itself over the years? Will it provide a proper end and answer the questions it asked? It doesn't always work out.
The final run and the finale itself of BSG is a generally well done end to things. Characters get an ending (in many different ways, some tragic, some hopeful), the story comes to an end (and then gives us a final parting thought to ponder) and the final Cylon finally shows up and explains just what has been going on for the last few years!
For me, it was all worth it. It's not tied up in a neat little bow - and that was BSG's greatest strength, because what in life does end so neatly? Your left still to think for yourself what some of it means, yet a clear and satisfying ending is mostly given.
And after watching the last moments of the final episode - I just went back to the mini-series and started from the beginning!
After all - 'all this has happened before, all this will happen again'!!!