Moreover, I have well-off parents who I know will be there for me in a pinch and a husband who - although also up to his eyeballs in debt - can come up with money in a crisis. I am by no stretch of the imagination poor.
Even so, I have experienced how depressing it can be not to be able to buy what you want because you want it or to put off paying a bill by a few days when you're waiting for your pay to come in. All of which can only hint at what it's like to be properly poor and not have enough money to pay the bills - an experience journalist Amy Gray has articulated rather nicely here. You should read it: it's free.