It's irresponsible to postpone responsibilities.
John has a very important assignment due in two weeks.
John wants to progress in the new video game that he has just purchased.
John finishes his assignment early and spends his new free time playing his new game.
John procrastinates on his assignment and instead spends more time playing his video game.
John is able to make good progress in the game, while receiving the highest marks on his assignment.
John begins his assignment 3 days before the deadline and realizes that the assignment is much more complex than he thought, and receives a failing grade for submitting unsatisfactory work.