There are definitely perks to shift work, but the downsides include heart disease, ulcers, obesity, diabetes, and freaking cancer. The problem is that it disrupts your circadian rhythm, which is like your internal clock that tells you when it's time to eat and shit and sleep, like some kind of seriously overinvolved babysitter. This basically putting you in permanent jet lag. That sounds like kind of a wussy complaint, but it fucks you up in short order. It has the same effect as accelerated aging, everyone's least favorite superpower.
Befitting the old person you've become, you even start to lose cognitive ability. Taking your sleep schedule hostage results in a severe case of what is scientifically known as the brain fuzzies. That's annoying enough when you start walking into rooms and forgetting what you went in there for, but it also results in tons of workplace accidents. You know, like this:
Department of Energy/Photodisc/Getty Images
"Everyone who would have fired me is dead, so ... three-day weekend?"
Yeah, they think the Chernobyl disaster was caused by the fatigue of shift work. Maybe consider that when they offer you night shift incentives. And if you work nights, it might be time to get a more traditional 9-to-5 job, but hopefully one that's pretty close to your home, because ...