“Be nice to people” is a general rule that can arguably do more good than bad. Being mean and rude to others, however, can make the lives of everyone involved needlessly difficult.
Take redditor ‘Tahnkoman’s’ story, for instance. After spending the trial period working for a company in a niche sector, he decided that it wasn’t the right fit for him, partially because of one aggravating coworker – a bully, who the OP fittingly called “Jerk”. He was rude and mean to fellow employees, so it’s no surprise that when it was the time to share thoughts, no one had anything nice to say about him. That eventually left the Jerk out of a job. Scroll down to find the full story below.