Thanks for all the great replies everyone! A few comments:
I probably should have defined "crash" better in the beginning. I would consider 2008 a crash in the housing market, and would call that time a depression, and the current time a recession. It's more common to lighten up these situations with nicer sounding terms (especially if you are a politician), but I think they are serious situations and should be labeled as such. I don't expect that we will collapse into chaos anytime soon, but I do expect the stock market to "crash" significantly in the coming year or two, and that that will impact the rest of the economy. I also expect other economies (Japan, China, EU, in particular) to have significant crashes as well, which will all contribute to our economic depression.
That crash will be a correction of over inflated markets, and will involve the real estate market too some degree, though real estate will not be the focus of it (and it will more greatly impact certain over inflated local markets). It need not last a long time, unless government intervention drags out the corrective process to prop up inefficient businesses and industries, as it has done to various degrees since 2008. Such a crash wouldn't need to be severe, if people were managing their money well and kept reserves on hand, though with the amount of total debt and negative savings the average person has, this will not be the case.
As for government spending and debt, a trillion dollars spent by the government is not equal to a trillion dollars spent by the people. The government will blow up a chunk of that money (in war) and will inefficiently spend the rest. It's not merely money being spent that drives an economy, but money that is efficiently spent to increase production. Competition in business and individual spending in a free market leads to greater efficiency of production which results in long term economic growth. Government inflation and injection of cash provides temporary growth and creates bubbles that will eventually be corrected by the market.
A few things to consider: China inflates and falsifies their economic statistics, as every communist nation does (and most other nations do to a lesser degree). They have severe economic problems, and though they probably won't be the first domino to fall, their crash will impact every other nation. Japan has negative interest rates, something just a few years ago economists said was impossible. They have massive debt, and are desperately trying to prop up their failing economy. Greece, Italy, and Spain, to name a few, are draining an incredible amount of money from productive nations in the EU, and along with the Brexit and immigration, may result in a crumbling of the EU. The USA has high unemployement (when including underemployment and those who have left he job market) and stagnanation across the board. Money is pouring into the stock market because there are no more safe investments (bonds and savings, which can't beat inflation anymore) for investment funds ( pension, etc) causing it to be over inflated. Numerous states and cities in America have gone bankrupt, and this will continue as they are unable to fund promises made prior to 2008. Current debt and unfunded liabilities aren't a cause for a crash, but they will be severely impacted by a crash and will lead to a worse overall economy.
Cycles have been fairly consistent running about 7-10 years for the past several decades. I don't see any indicators that we will not continue this pattern, though with interest rates already so low, the feds will have fewer tools to try to prop up the economy in the next cycle down, leading to a worse crash than before. Gold/silver is not a long term investment, but a long term insurance policy and a short term investment in a down economy. With uncertainty not only with our own economy, but those around the world, insurance against loss of wealth is important. Cash generating residential real estate will also continue to perform to some degree, though rising taxes and dropping rental rates could significantly impact the cash flow. As some mentioned, guns also are a solid and stable investment, though less liquid than cash or gold, and possibly effected negatively by new government laws (while also being helpful in fighting off the zombies).
I plan to continue to invest in real estate, but only with very low debt and a very high cap rate. I will also build up cash reserves in dollars and gold/silver and prepare to buy after the market drops. If it doesn't drop, then I have good cash flow from my current RE investments and a bit more from my conservative near future RE investments. If I miss out on some opportunities I won't regret it, as I don't consider that potental reward to be worth the potential risk, which is a decision we all have to make with every investment.