Suppose I can produce the required output in less time (say 20h per week) because I’m just so smart.
Then why would I spend the other 20h just watching TV? Why not produce up to twice the output by working 40h?
If your answer is “I get paid the same regardless of my output,”then that’s the wrong terms for so smart a person.
Employment is for those who (unlike you) aren’t confident about their output capacity and have to resort to selling their input capacity.
If your answer is “I don’t need that much money” then I guess the counter is “I don’t need that much recreation”.