Those people that are suggesting "we just let them fail" do not fully understand the state of the economy, and how interlinked the banking mechanisms are for credit, risk, and liquidity (my father was a sr. executive for the 2nd biggest bank in the world - retired about 10 years ago - he taught me a lot, and has been interviewed for articles in the business press twice this week on just this topic)
My wife and I have good credit, we are both employed by large corporations (she in education, me in software), we are pretty diversified in our banking, and other than looking at sucky quarters from both of the companies we work for (which will mean no bonus) the impact we currently feel directly from this "credit crunch" is minimal.
However, in our immediate vicinity (in Northern CA) there are already 2 car dealerships that have shut down in the last 30 days (not sold, literally shut their doors). The reason is simple: they can't get credit to hold inventory on their lots (car dealers don't "buy" new cars from the manufacturers, they take out short term loans to pay interest until they are able to sell the cars. After selling the car, they then pay GM/Ford/BMW/etc. their cost for the car and pocket whatever markup+dealer incentives they can. The interest they pay goes directly against their profit - which means the longer they hold a car "unsold" the lower the potential profit). At this point w/credit being tight and rates increasing dramatically (and fewer buyers qualifying) it's no longer feasible for some dealers to stay in business. Left alone, this trend will continue (the prediction I saw yesterday was a full 25% of the new car dealerships across the country are "at risk" - representing about 270,000 jobs and over $650M in local sales tax revenue that flows back into our local communities).
Okay - so maybe having less car dealerships is no big deal. Let's look at something else. I have 4 supermarkets near my house (3 large chain markets, 1 smaller independent market that caters to more high-end & specialty food offerings, including things like gluten-free choices that my wife needs). Last night I was talking to the assistant mgr of the smaller independent market as I was checking out - he said they are going to have reduce their stock (on the shelves) by up to 30% because their credit line has been "temporarily" reduced, and their payment increased. Note: this store has been around for 50+ years, they aren't losing any customers, people are still buying the same things from them (even true after they had to raise the prices on various food items earlier this year as did everyone else in the industry), and they are profitable. They have to offer less because of how their credit line is being impacted.
So you could argue the big guys (Safeway, etc.) are less leveraged than the little guys. Actually that's not true - the big supermarket chains are actually more leveraged - and a really severe credit crunch could easily impact the both the amount and quality of food that you will be able to purchase.
So let's bring this much closer to home. How do you think the vast majority of dive operations run their daily business? Only a very few actually don't leverage credit in some way (either w/manufacturers, equipment leases, real estate, etc.). The global impact of this credit crunch (if not addressed) will eventually cause huge strain on the operators (dive shops, liveaboards, resorts) that we all want to continue to exist. If you don't see this then you truly don't get how leveraged our global financial system really is. A small resort or liveaboard will likely be a lot more sensitive to this situation, meaning the places you most likely want to dive may be the first impacted by this.
So what is the right level of leverage? That's an entirely separate question. It's obvious (at least to me) that in the US we live way beyond our means, and the average quality of life here is much higher than our real GDP would dictate if we lived elsewhere. However, to suggest we shouldn't try to prevent a "credit freeze" that will impact virtually every one of us is just being shortsighted.
What I learned in high school was that this is one of the reasons the US is a Republic (vs. a true democracy) - because our founding fathers guessed that as a whole, our population wouldn't be smart enough to rule themselves completely.