This is getting to become a well debated thread, so I would like to pose a question.
How many of you have been to a country/area where you absolutely receive no services, including fuel unless you "pre-tip" (if you get my meaning)?
Sometimes the "tip" is not money. There were a few times when I was with the government that I "tipped" the ground crew with bags of ice and a couple of cases of beer.
If you never operated in such areas you are lucky.
Of course I have operated in areas that if you tipped the wrong person you could end up in jail, or worse.
Anybody operate in India without "tipping"? (Sorry Bombay Duck, no insult intended.)
Mexico?
Panama?
Anywhere in Africa?
etc.
(I'm not criticizing these areas or countries, that is just the way it is in some places around the world.)