This is a competitive world, if we want to survive we have to be hurry. In olden days, only aim was to earn money for basic necessities (food, clothing, shelter), but today basic necessities has increased to such a extent that if we are not hurry then we cannot survive.
Also as we say time is money, if we lose time we lose money. If we take everything lightly and slowly, we are wasting our time, once time goes it doesn't come back. Many people think in this way hence they always run with time.