You know, with the way kids are raised nowadays, i think it can be said to be hard to be nice. I was lucky to have parents who raised me to be considerate of others in all situations, and that if I was angry, it was better to not make it known to others. We all have a better life in society when we don’t be angry at each other. That’s a fact.
However, as I have a sister in high school right now, kids nowadays are raised to be combative and argumentative. Kids nowadays are told that they’re right - they’re the best - they deserve it. They’re given everything - and they don’t have to take crap from anyone. They’re raised to instantly assume someone else is wrong and not them - and not to look at the bigger picture. They’re raised to think that it’s never their fault. I think this is a big barrier to being nice and makes it very hard for these people to be nice - they simply don’t understand reality as they were raised in a fantasy of “i’m Always right”.
I’m not saying everyone’s raised this way now, and in fact there’s many who are raised properly to respect and be nice to others. However, I think it’s a large part of the problem and makes it quite hard for this type of person to be nice to others.