I can able to do it all in short amount of hours every day because I am fast, organized, time management and above all my great wife takes bulk of load managing household and kids. 

If I’m remembering correctly I believe around 4-5 percent of American households are millionaires and less then 10 percent of that is above 5M so statistically you’re up there if you’re in excess of 5 or 10M.

Also, every property that goes vacant - winds up sitting at least a few weeks if not a month or two until it's re-rented.With the national household income still at ~mid-$50k I don't really know what more we're expecting on these.

For example:NJ Median Household Income, 2016 = $73,702$73,702 / 2 = $36,851 which is the median income for a C and lower areaThe median income in Paterson is $33,000 as well as Newark, NJ.

This time we are in a much more depressed economy with the avg house hold making less than they did 15 years ago.

Its almost become a requirement to be a double income household to afford a house now and even that has become increasingly harder even with that.

Economy"The Golden State has no peers when it comes to expanding GDP, raising household income, investing in innovation and a host of other key metrics."

For many, whether using personal or household income, the answer would be no.

My parents weren't too bad, but all my friend's households were insane.

. ;-)On a more serious note, in answer to your thesis, This article just came out:"Roughly 43 million American households have opted to rent rather than buy their homes because of convenience, cost or both." https://www.biggerpockets.com/forums/311/topics/59...