Sometimes simple happiness can be found with innocent pure and weak people.. helping them a little might be a huge help for them to survived.. and selling some foods or stuffs is totally different from begging..
While on the other hand, begging is an act where people has to used their weaknesses/incapacitated in order to survived but have you ever tried accepting the norms and consequences from the fact that the more you give alms to these kind of people is you become that very “tool” or a “machine” that creates more of them …