Food is a continuous expense, unlike footwear (which if expensive are more durable and therefore a better investment)
While that's usually true (though obviously not always...just because something is expensive doesn't mean it's necessarily better) for people who's feet have stopped growing, it's a HUGE waste of money if you're out growing shoes every ~6 months. That's fine if you have the money to burn, not so fine otherwise. Still not cool to judge somebody if you don't know the details....but if you DO know the details, judge the funk on.