Let's continue whoever57's analogy.
Your family have lived in a house for generations. A few years ago the house needed a bunch of work adding rooms and generally upgrading it to fit your new status as members of the respectable middle class. You didn't have the cash but you had the status and rates were cheap, so you took out a bank loan to cover it. As that loan came due, your husband lost his high paying job and had to take a cut.
So you begged with the banks and eventually they agreed to lend you more money, but at a higher interest rate. Paying more interest on less money is tough, the house continues to need work to keep it in good repair and you continued to not quite make ends meet. You go to the banks and beg for more money so you can keep paying the interest and repairs but the banks say no, they say you need to live within your means.
You promise to do that, and you quickly 'adjust' your finances to show how it's all going to work out. The bank sees through the farce immediately but he's a greedy fellow and with you agreeing to add 200 more basis points onto the rate, it's gotta be good for him. If you default, your cousin will probably cover it anyway so it isn't much risk.
You keep struggling, and you have to beg the banks for money every month. This starts to annoy and worry the banker, so he starts taking an increasing interest in your life. Don't do a good repair here, just leave the window broken... Don't send your kids off to uni, educate them at the local community college. These things save a little cash, but they also lead to you having to spend a whole lot more time looking after the house instead of making money. Even worse, your kids having a lower level of education means they can't get such a high paying job to help out which is a real problem since your grandparents have now retired and are moving back in.
You get desperate and crawl to the bank begging for more and more. They look over the situation and say, well, maybe, but you have to cancel all expenditure. House repairs, who needs them? Further education, completely abolished!
You hold a family conference. What to do? Give in to what the bank wants and destroy your family's future? Or default and have the bank potentially take possession of your family home. Put like that, it isn't such a hard call, you tell the bank to f. off and wait too see what will happen.
Who's at fault? You for living beyond your means? Yep. You for lying to the bank? Yep. The bank for accepting such an obvious lie? Yep. The bank for loaning money to someone that couldn't possibly pay it back? Yep. The bank for insisting on austerity measures that will have a negative long term fiscal impact, yep.
Does that help?