Yes, being a security officer is a good career. While a security officer does not pay well, it is a relatively stress-free job with a good work-life balance and requires very little training to begin.
It may be difficult to sustain yourself on a security officer salary, which is why many security officers work a full-time job or are full-time students. It's a great part-time job because of the flexible hours. In fact, you can find a schedule that works with your life. This is a 24-hour a day, seven days a week, 365 days a year industry.
Other perks of being a security officer include seeing things and having access to areas most people dream of. In addition, it requires very little physical energy most of the time. If you're an independent type who enjoys people-watching, then being a security officer may be the perfect moonlighting job for you.