Disagree. Set realistic goals, achieve them, and finish your life satisfied that you've done what you set out to do. Constantly demanding more is a recipe for being unsatisfiable.

If I died today, I'd do so happy that I checked off the most important things on my list. I gain nothing by adding another 100 things to the list just so I can say that life is too short. It's long enough for what I want to do; anything more is a bonus.