There is always a lot of discussion whether to give money. Most people say they refuse to give money but will give food. I disagree with that for the reasons you mentioned. Give money and really make someone's day. What they do with it is none of my business.
@curiosi yep that's the right way to see it , by making their day that's what its about , not caring wtf they're going to buy with it , so what if they wanna get some weed or a beer or smokes , jeebus people have a right to live
