It's not just government officials. It's almost everybody (maybe not you ) with some money and/or power. What happen to our value system?
but on the other hand if you think about a little more, second wives also do something good here:
1. it re-allocates wealth from the rich and powerful to the poor, which will boost demand and consumption.
2. a more stable and longer term relations might help to reduce STD transmission.
3. Provide traces or evidence to find and prosecute corrupted officials.