Stress
Ask a poker player what the most stressful thing is about their job and they'll happily tell you: losing. Especially when your hand is so unbeatable.
The coolers, the bad beats, the awful players being constantly rewarded by blind luck—there's nothing fun about losing at poker. Although you know what might be more stressful? Every other job on earth.
Come on—you get to play a game for a living. And unlike athletes, you don't have to worry about getting hurt or having an arena full of people boo you for a bad performance. The swings of fortune can wear on you, but if you actually do make money at this, it's a fairly stress-free life.
Oh, and did we mention that when you spend a certain amount at the casino, they throw in your meals for free? Say goodbye to the grocery store.