On the pilot episode of Caprica (The Syfy Channel) Daniel Greystone tells Joseph Adams (Adama) that "A difference that makes no difference, is no difference". The human condition wants novelty - change. When there is no change, there's boredom.
I'm reading "The Science of Happiness" by Stefan Klein, PHD. Dopamine - the molecule of desire is what drives us. It is the desire that makes us smart and without it learning is difficult. Curiosity goes with that - "it is one of the personality's most stable indicators" says Dr. Klein.
So next time someone says - what do you want to do today ------- don't say - I'm indifferent.