I watched the first 3 seasons of Lost on DVD, then tried to follow season 4 on TV. But somewhere along the line I lost interest.
But last night I was glued to the TV from 6 to 10:30 pm. First, there was the 2-hour summary, which I watched to catch up, then the 2-1/2 hours series finale. It was some fine knitting time, let me tell you. And I really don't feel the need to watch seasons 4 – 6 on DVD. My life will be fine without knowing every detail that went on.
But my life IS better for having watched this. (I had the same question about Hurley's physique.)