I don't know. I try very hard not to be mean to others, but i don't make a hobby out of being nice. Expressing kindness towards others is just something everyone should be capable of, not something for people to be những người hâm mộ of.
'Being nice' is over rated, being nice gets bạn stuck in the mud of life. bạn have to be tough to live a tough life. Be mean when needed to be, life IS hard, it's horrible and mean and bạn have to stand up to it.