That's more than can be said for a good chunk of jobs, so not a bad deal.

Lol what, are the sheep being forced to eat the grass?

Slavery the same way using a dog to herd sheep is slavery. If you've ever seen one of those dogs at work, you'll realise that there is nothing else in the world they would rather be doing. You let them herd sheep and they're so happy they're basically out of their mind. I honestly think it's hard for us humans to even imagine loving just one thing so much that you would never do anything else if you had the choice.

I know a guy that rents out goats for a similar purpose of keeping down vegetation, they go under power lines in the mountains (places inaccessible with machines), and just graze there. These goats are literally living the best life a goat could ever dream of: They're chilling out in their natural habitat, with more food security than any wild animal could hope for, and are completely protected from predators. In the winter, they're kept warm and fed, so they don't starve or die of exposure as a lot of them would in the wild.

Imagine if we treated people this way, just providing for everyone's basic needs and let people do whatever made them happy...