Off-Topic: The dot com bubble was nothing.

Off-topic, so I'll keep it short.

I'm in the process of purchasing a home. For most people, myself included, that means getting a mortgage. Which made me think:

Most Americans purchase with money they don't have...
From banks which are lending money they don't have...
Who are insured by a government that is many trillions of dollars in debt.

This is nothing new. Will everything continue smoothly? Or will the house of cards fall down? What do you think?