I one time, after my kids went to the college, try out the religious life.  I remember one older nun complained; "Some women try to enter a religious life later in life when others toiled since when they were young and all their lives."    I thought about that if it is unfair that I try to enter the religious life in the middle age.   However, I thought the nuns who entered monastery young have nothing to complain since they had lived with God all those years.    
Look at Pope F. and the Vatican prelates, they refused to do the will of God by refuse to protect children from being raped by the clergies!!!!!!!    
Matthew 22:14 "For many are invited, but few are chosen."