I believe that:
* especially long, unpleasant commutes can be a significant source of unhappiness
* shorter commutes are _consistently_, across different people, a source of happiness (whereas any other thing might bring a lot of happiness to some people but not so much to others)
But I think it's absurd to think that for any given person, a short commute is high on their list of things to make them happy or fulfilled (especially if they're not already actively unhappy with their commute).