I know a young woman working in marketing for a credit card company - she hates the job. She knows it is a rip off to the merchants and it is doing nothing meaningful.
In the Brisbane apartment boom it was soul destroying to work for developers. They wanted the cheapest build possible for a sale - they did not care what would give the least maintenance, say, or an effective fire alarm system.
In dealing with solar panel installation companies, I am meeting people whose aim is to save the planet. They are enthusiastic for their work - it is refreshing.