My brother Dan's painting a house, as a side-job. He likes to keep active!
There's a few spots for which is absolutely needs an assistant; that's me - I'm the dumb labor. And I'm great at dumb labor.
I won't say that I'd like to do this all the time, or even a lot of the time. But some of the time, it's just nice to pick things up and put things down and move them all around. It's also very satisfying to see your work get done!