Time, Your Grace.
Just recently finished watching season 4 (the final season), of this series. I don't want to give too much away, but the finale (though it was not utterly heart-wrenching as some series finales can be; as in, you feel so sad to see the characters go that you find yourself in tears. My eyes did well up at times.), felt like it had an appropriate ending at an appropriate time. I wasn't sure how much more I could take of "old King Henry". The direction that they took bringing back all of Henry's wives, and of course the flash backs, was kinda nice.
The season in general could not compare to the drama, and interest, and excitement that was season 2. Not sure if the show had different writers or what. I loved Anne Boleyn and a "Younger King Henry". For some reason, he just seemed to have more energy which brought more energy & humor to the entire show, or so it seemed to me. Unfortunately, as he rapidly grew older & more tired, so did the show in some respects.