Ingratitude is at the top of the list of ugly traits.
Dennis Prager has a good discussion about it in his new Rational Bible.
People rapidly forget the good others have done for them and they’re quick to express their resentments.
That’s human nature. The hardest thing to cultivate in people is gratitude and to get them to love both their fellow man and God.
Our secular times are a testament to this age-old truth.