Also, it maybe efficient in turning dollars to aid, but nobody at the "rich trader bar" wants to hear a story about someone donating money... that's just a way to reduce taxable income. An engaging personal story about travel and experiences is much more likely to have an impact on others.
From a purely financial, self-interested standpoint, how does a donation to charity which reduces taxable income actually help a person? If I reduce my income by $100, it's true I won't have to give the fraction of that to the government that I might have, but now rather than being out a fraction to the government, I'm out the entirety to the charity.
Even in the case where the donation drop the payer to a lower tax bracket, I don't see how it helps. Any insight greatly appreciated.