Has there been momentary value impacts, yup, sure has, we just recently went through what was labeled one of the single largest collapses in all of human history in real estate, and all values were recouped in full within 10 years. 

During the housing collapse, I got into REI, and in short order as people thought I was bonkers and couldn't figure what I was doing, swearing of impending financial doom, I simply said "I choose to not participate in a down economy", and it really was that simple, I made a choice.

There was no one event that led to the collapse...it was the perfect storm of many events.  

Otherwise, their investment will collapse.

As we know, that ended in the almost collapse of the entire world's economy.

We had been evicted from our apt, (long story) and I was giving blood on a weekly basis for food money, to the point my veins finally collapsed and I was no longer allowed to give.It was at this point, on one of many sleepless nights, at 3 o'clock in the morning, that an older silver haired investor spoke to me through my television.

But on BP, there were topics back 9 or so years ago about LOC and HELOC freezes and, in general, the collapse of access to capital.

It is out of whack and in alignment with pre collapse levels.I do not know why I spent all the time writing this. 

On the next episode of "How to collapse your own product by sending in new users to spam the most experienced real estate investors on the planet by telling them how good something is that is already being done by a million other companies after the CEO gets kicked out of the forum"...Another lesson in what not to do and how not to respond.

Company valuation and the cash flow that produces is great but means little against major war, bank collapse, hyperinflation, etc.