Sure, your students may very well spend the little free time they have learning maths.
But are any of them going to be able to do any significant amount of studying maths without being homeless?
But are any of them going to be able to do any significant amount of studying maths without being homeless?
Why not? Maths studying correlates with high intellect, high intellect correlates with competitiveness in the job market. So their chances of finding a job that would allow to have much of free time (for doing math) without being homeless are pretty good.