More deductions would mean that we have to collapse the remaining income and, with it, the 20% deduction - defeating the purpose!

Even when we look at the height of the bubble, and then the collapse, home ownership rates havnt actually moved all that much. 6% is the entirety of the swing from the low point to the high point. 

I have already done roof and driveway repairs at my expense.The neighbors are complaining that a retaining wall in the backyard is collapsing.

A stock market collapse can trigger a recession bring prices lower. 

The fireplace is collapsed, the roof, windows, HVAC all need to be replaced.

Putting up shutters, waiting in line at 4am to hopefully get plywood, dealing with the aftermath of power outages, having to cut down three palms, two olive trees, one crepe myrtle, three mangos, one strangler fig, all mature trees on various properties, one branch fell on roof and punched a hole collapsed the ceiling of a unit, one branch as big as a power pole fell on another roof with one end resting on a live high voltage power drop, over 200 linear feet of fallen fences...all the damages and none of it covered by insurance as our windstorm coverage is around 5% deductable.

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.

It is better to wait for the market to collapse and then buy.

A couple had actually collapsed and were exposed, the sellers solution was to plant huge bushes around it to hide it. 

They can't take down the wall themselves or they'll be in a worse position with their property (the roof will likely collapse or you could walk onto their property, etc), so it benefits them for you to sign off that you won't do anything either.