Relaxed work environment.
Trusted - If you do your job properly, you'll do it without anyone looming over your shoulder.
Good pay - For what the job asks of you and entry without a degree or anything.
Kontras
Lack of training - You spend only one day of learning the layout of the premises and all protocols before starting your regular shifts.
Accountability Imbalance - Some employees are seemingly held accountable while others aren't.
Attire - I will never understand why security jobs require you to wear constrictive clothing.