I never give money to beggars because they will only spend it on cheap wine and tobacco. I prefer to donate to homeless shelters where they can get food and shelter.
At the end of the meeting, the vendor insisted on giving him a 750ml bottle of Scotch tied with a red gift ribbon. My colleague is maxed out with luggage, so gives the bottle to one of the ubiquitous winos on the 100 foot or so walk from the lobby to the taxi stand. The wino goes screaming and running down the street as if he'd just won the Powerball jackpot.