"Where will the money come from to get the car fixed?" is a very personal question; answering it well would require knowing a lot about the person asking, and what their life circumstances, talents, resources, and obstacles were. This makes it harder to discuss on HN (or most other Internet sites), since these are very large groups who are mostly strangers, and don't know that much about each other. Questions about economic equality, the cost of housing, career advice, and so on in general are reasonably well represented here, I think.