The Last Homeland

At the beginning, it was obvious that the protagonist knew that it was the end of the world and that they were zombies. However, the encounter was still the same as usual. He obviously saw those stumps and broken arms, but they were still unchanged at all. I was really speechless. I didn't know how to be cautious at all. When I went to the supermarket, I went shopping as usual. I was still thinking about giving money to the humanoid people on the way. I didn't hide or observe them from a distance. I even ran up to say hello and stayed away from the special ones. Don't come close. I'm really speechless. Can you have some logic? Normal people who are bolder may go out to look for food because they are hungry. But you have food, and why do you give it to others at no cost? You have food and you go out to collect food yourself. And you are not afraid of anything and you are not careful at all. Normal people will carefully observe the surroundings and then carefully look for food. You really can't explain it.