i think part of the reason they beg is because tourists are willing to give it to them .... it's simple economics: you ask ten folks, and one gives you some money, it's worth it. You ask fifty, and five give you money, etc. .... also, if the average tourists stays seven days, then one out of seven, on average, are on their first day and thus more apt to help .... folks on their SEVENTH day are less apt to help, presumably because they've been asked so many times .... but if you ask seven folks, on average one of them is on their first day, and thus more apt to give a handout ..... it's the basic principle of business: high risk, high return.