The returns are chewed up by inflation, unknown fees, and more fees of fees.If you are loaded and want to hide cash, go for "investment" insurance.  

.- The $50k from a flip is chewed into by cap gains tax.- If you qualify as a real estate professional (LTR) or meet the material participation rules for an STR, you can do a cost seg & take bonus depreciation (begins sunsetting in 2023 @ 80%, but still awesome).

Then dogs and squirrels will come by, chew it to bits and leave a mess.