"Once again he spoke to him, 'What if only forty are found there?' He said, 'For the sake of forty, I will not do it.' Then he said, 'may the Lord not be angry, but let me speak. What if only thirty can be found there?' He answered, 'I will not do it if I find thirty there.' Abraham said, 'Now that I have been so bold as to speak to the Lord, what if only twenty can be found there?' He said, 'For the sake of twenty, I will not destroy it.' Then he said, 'May the Lord not be angry, but let me speak just once more. What if only ten can be found there?' He answered, 'For the sake of ten, I will not destroy it.' When the Lord had finished speaking with Abraham, he left, and Abraham returned home." NIV translation
The conversation continued until Abraham stopped asking for forgiveness at ten. Why did Abraham stop at ten and not go all the way down to one righteous man? Abraham must have thought that the city could not be that bad as to not even have ten men with hearts for God. Would the Lord have spared the city for just one righteous man if Abraham had asked? The answer is yes but he knew their hearts were given over to evil. It seems that many look at our world today with the same "it can't possibly be that bad" attitude. The "church" has become comfortable and forgotten that judgment is coming.