Pro wrestling can be a very rewarding business for those at the top of the game. But it is also a physically gruelling job, hence why so many successful wrestlers do it out of passion. A guy like John Cena for example, he could have retired or gone part time years ago. He's a multi-millionaire and never needs work another day in his life. But he continues to work as hard as anyone in WWE, mainly because he has a passion for the business. It hasn't always been like that with top guys. Particularly in the nineties when the WWF and WCW were in competition, top level wrestlers would leverage for minimum dates and maximum money. It became more about the money, than the passion. Which isn't necessarily a bad thing. At the end of the day, careers are short. Wrestlers are people like anybody else, they have bills to pay and families to feed. Maximising millions, when the boss is making hundreds of millions, is fair enough. Still, many wrestlers have ended up criticised for only caring about themselves and their own earnings, rather than the collective good of the company which in theory should make everyone rich. In some of the following instances, the wrestlers only cared about the money. Wrestling was just a means to an end, a job to get rich off of.