That is how humans behave instinctively. It isn't work. It just happens. The same will happen to your TV series. At some point, you'll like different stuff. It

That is how humans behave instinctively. It isn't work. It just happens. The same will happen to your TV series. At some point, you'll like different stuff. It also isn't "little gain" - it's the most efficient approach to the multi-armed bandit problem. Other approaches are less efficient.