Well, why are we in this current situation? Because at the margin at very low income levels it makes more sense to borrow than save. However, in a deflationary system it makes more sense to save than borrow. QED
It only makes sense to save when there is enough income that the risk of losing savings from a) bad investment or b) inflation is lower than the expected payoff.
But saving makes sense even just to prepare for unexpected expenses. We're not talking about hundreds of thousands of dollars here, in most cases, it's not even tens. Barely scraping by might be a bit of an alien concept to someone pulling in $250K/year from programming.