Buying cash just mathematically doesn't make sense when 30Y *fixed* rate available.Brilliantly stated!!  

I have been calling this out for many months now, it's mathematical.

That is just a mathematical fact.I hope this is helpful.

Bachelors and Master's in Petroleum Engineering with a minor in Mechanical Engineering and a minor in Mathematics.

What I did here is mathematics. 

Rental properties are nothing but a mathematical formula, just like owning a stock it is an inanimate object and a financial vehicle to get you to your goal.

Calculating a cash flow requires a mathematical equation and it goes up and down based on the inputs.  

We know with mathematical certainty that's a unique time opportunity because with reproduction costs so much more, it's only a time cycle as that satellite market pricing will rapidly appreciate, because it's below "gravity". 

if you want proven mathematic formulas how to pay off 30-year loan in 10 years, I'll share the tips, $100/hr ?

There is no way to know with certainty when the next large decline will occur, but mathematically there are a lot more years of RE appreciation than depreciation.