What should I do vs what I did.

Once I was in the center of Málaga buying clothes, when I finished buying clothes I left the mall and went to buy me some snacks because I was hungry. I did not have much money because I had spent it all, when I went to take the bus, a destitute man stopped me and told me if I could buy him something to eat, a sandwich, a warm coffee, something because he was very hungry and did not have money to buy nothing to eat. What I could have done is how everyone was doing, move from him as if he were a ghost, but that person touched my heart, because being in that situation and asking for help to eat and nobody paying attention to you has to Being very hard, it reminded me of my grandfather so I gave him all the money he had loose, it was like five or six euros, so that he could buy something to eat and at least that afternoon he did not go hungry.