Lucifer didn't knew that most of the people in this planet are mean,greedy, selfish but there are few nice, helpfull,people.

Lucifer does not told people about his identity

that he was an angel of dark means.

He saw how people betrayed him .He thought that he would punish them with his dark power but he knew that ,that would be not appropriate for him,so he just forgive them .

But one day , he lost his patience and give the robber unfortunate death ,he got interested using his power again ,would he will be addictive to it ,and taking life of people?

let's see?