I have done 8 houses for habitat for humanity when work has been slow. (I am a plumber) I had the privilege of working with a man who was unemployed and homeless. He helped me some and told me one of the reasons he was doing it was to maybe get lucky and get a job with one of the contractors who were also volunteering. He did, I seen him several moths later working for a brick mason, he was doing simple labor, but learning to lay.
I myself done the the work because it is the right thing to do , IMHO, and it makes me feel good to support an organization I believe in.
A nation of sheep will beget a government of wolves.
― Edward R. Murrow
"You don't have to burn books to destroy a culture. Just get people to stop reading them" - Ray Bradbury