The currency of the Hereafter is righteous deeds and no other currency will benefit man after his death. There will be no foreign currency exchange where he can change his money for good deeds like we do here when traveling from country to country. The person who has more of this currency of good deeds will be in that much more comfort than the person who does not. Today we have been given time to amass this currency so that we may be in comfort in the Hereafter. It will be too late in the grave.
Does man ever stop to reflect on the fact that he is getting old? The answer is an emphatic no because man always considers himself young in every circumstance. His youth slips away and man becomes an empty shell but he does not realize this. He still thinks himself young when the Angel of Death comes for him.
Source: Purpose of Man by Shaykh Zulfiqar