Let's ignore, for the moment, the big issue here, which is that by far, these jobs are not held only by people who you describe (college students and impaired).
I don't think creating an artificial job that cannot actually feed you can make anybody feel better of themselves. In any case, it shouldn't be called "a job", which was my point.
In particular, I think college students should study and not be distracted by having side jobs, and disabled people should either enjoy their pension (assuming they live in a civilized country that has that) or have a regular job (in fact, labor laws in my country prescribe positive discrimination for disabled people, even though it is probably economically inefficient).