Referees enjoy their job when the coaches and players are interested in playing by the rules and playing safe. Referees have fun, but their job is hard because they have to concentrate the whole time.
Referees get a lot of pressure from fans, coaches, and players.
The pressure depends on the level of play and the fairness of both sides. It also depends on the level of game, competitive or recreational. Most of all referees are cursed at by the players, coaches, and fans. It starts with the coaches. If the coach uses poor sportsmanship then the players pick it up.