Why do they act like this isn't a thing?

I’ve been a waitress. Some of the people I’ve worked with are the whiniest, unreliable, rudest, mean, entitled, laziest, clueless, and down right aggravating drama queens I’ve had the displeasure of knowing, You may think oh they’re just having a bad day or the customer was being rude to them but nope that’s how they act everyday. And it’s not even just them, it’s the chefs and management too. They all hate their job, and treat getting up everyday and going to work is like an inconvenience for them and it shows through their attitude and work ethic. There are some awesome ones who take pride in their work don’t get me wrong but the bad ones are very very bad!!!