Being nice costs nothing. All it requires is not being an asshole.
The hyperconnected world persona association is easy. If a bunch associate you with a bully and unkind, you are that. But it is more treating others as you would like to be treated.
We are all fighting our own battles. Some at work, others in a relationship. The world is not perfect. If we have nothing good to say about a person or scenario, we can be quite.