First, a lot of people exploit old people (some registered nurses, members of heavily regulated profession, with multiple degrees and licenses in nursing and medical sciences come to mind.

Where to buy in Detroit is just as much art as science.

Quote from @Stuart Udis: @Jonathan Greene But where else can I purchase my 1% rule properties with booming industries at the forefront of tech, life sciences, great universities and aren’t their rumors  that Amazon, Tesla and Apple are all relocating their HQ’s to Columbus by 2030?

An activity is a personal service activity if it involves the performance of personal services in the fields of health (including veterinary services), law, engineering, architecture, accounting, actuarial science, performing arts, consulting, or any other trade or business in which capital isn’t a material income-producing factor.7.

There is no true "science" to it and it is a bit of an art, but to answer your question, you are doing all the right things, and I would not let 2 rentals that have been on for a long time stop you. 

It's not rocket science. 

None of these things made me a better investor, or I should say gave me an edge that I could not have gotten otherwise.Buying a house and renting it out is not rocket science, despite what some gurus will tray to make you think.

He has no idea how to separate truth from fiction and is a danger to invest with.Anyway, you do an awful lot of arguing for Pace Morby even though you claim to not care one way or the other what people do.There is something fishy here.One thing Pace said in the podcast (which I watched) was to "watch out for gurus who borrow money". 

But the trick to a budget is making sure it satisfies your needs so you can stick to it - like they say about some diets - compliance is the science . 

The demographics of these investors are typically high income earners, almost 90% working in tech (software engineering, tech sales, computer science, etc).