Yes, I've read/watched most of those and I believe they are just entertainment. I can perfectly envision people living happy, long lives. These books and shows have manufactured conflict for drama.
With our current lifespan I already see lots of people intentionally killing themselves with alcohol or drugs or food. I cannot imagine most people would be happy with eternity.
I know most people aren't happy with how long they live now. The idea is that you'd get to choose how long you want to live instead of having it forced on you.
