"This gives a home owner ample income to save for retirement or make renovations to their home that would result in a positive ROI."  Well, there's that little factor you mention called "ample income."  If, as years go by, chronic illness and economic downturns don't diminish your income. And both occur more frequently as people age.  Gee, just about the time the HOUSE ages, too...oops, new room.  Yikes, total paint job. Wow: gutters need replacing.  Not to mention stove and furnace...just when you can afford them LEAST.  

So, let's talk about "ample income to save..." by all means.  And ignore the predisposition of many homeowners to SPEND rather than save as years roll on...