@Book Yes, what you said is the main reason why I don't feel like I did a good thing. Contact with "the other" is very important in these cases, because in that way the homeless person can in a certain way be actively responsible for his survival. Being able to give him the money personally would honestly make me feel better.
I have a kind of discomfort whenever I think that I have wasted money, and therefore have been defrauded in giving money to people who don't need it, it always makes me think that I could have used it in better ways. I can't refuse these possible scams because I have an illogical anxiety about the consequences of a my possible rejection, even though it is impossible that the other person will do something bad in public.