How rare good people are depends heavily on how high your bar for qualifying as a good person is. Many forms of good-person behaviour are common, some are rare. A person who has never done anything they later felt guilty about (who has a functioning conscience) is exceedingly rare. In my personal experience, I have found people to vary on a spectrum from “kind of bad and selfish quite often, but feels bad about it when they think about it and is good to people sometimes” to “consistently good, altruistic and honest, but not perfect, may still let you down on occasion”, with rare exceptions falling outside this range.
How rare good people are depends heavily on how high your bar for qualifying as a good person is. Many forms of good-person behaviour are common, some are rare. A person who has never done anything they later felt guilty about (who has a functioning conscience) is exceedingly rare. In my personal experience, I have found people to vary on a spectrum from “kind of bad and selfish quite often, but feels bad about it when they think about it and is good to people sometimes” to “consistently good, altruistic and honest, but not perfect, may still let you down on occasion”, with rare exceptions falling outside this range.