Earlier quoted context omitted.
I think you're making an assumption here that menial or dirty jobs are always unrewarding, but that's not my experience. I've met many people doing the kind of jobs you describe who find it satisfying. They may love using their hands, making the world a little cleaner, helping others, or just like their coworkers. Some say they like the simplicity of a job where it's easy to tell when you did it well and you never ne…
There's a huge difference between "find it satisfying" and "love what you do."
No one loves their job every moment of it and even the most rewarding job has challenges, stress, and drudgery.