Many of us after toiling and struggling to find security and happiness in this world will eventually realize that life is empty without God. Even though they have sinned much for many years, this awakening can bring them right back to reconciliation with God. Therefore, many will be saved in the end. Without such grace, not too many of us can make heaven. Better late than never for sure; but still, it's much better early than late, for you would live a happier life now and have a smoother transition to the next life later.