Because man are sinners and are born imperfect.. . WE still lack faith despite of what god has done for us. People immediately blame the lord when they got problems but when god granted their wishes they forgot to thank the Lord. . . The people are still desiring for material things like power, money, and fame even though they already know that thy're all unimportant.. . Jesus said that if we forget ourselves, take up our cross and follow him he will we will be saved. But look at what the people do?