For the life of me, I can't imagine walking into a lab after reading some hype books and trying to go into the pharmacy business even with a mentor who isn't licensed.

I can only imagine it's gotten nicer.

That said I imagine rules of thumb are a target margin to protect you from breaking even or worse losing money. 

I can't say I would handle a situation like this any better because I've never been in one, and I'd imagine I would easily fly off the handle.

I imagine there is no shortage of them in Miami.

Yes, from a cash flow perspective, that buyer may not be doing terrific (even if they paid cash for that I imagine their property taxes, insurance, operating expenses, reserves, etc. are not giving them the best return in terms of cash flow).

All these things will help more than you can imagine.- Keyword optimization.

They can't stop you from investing in RE, and I suppose they could fire you, but as long as you are good at your job and REI isn't eating into your productivity at work, I can't imagine an emoloyer having negative consequences from RE investing.

I’d imagine their average net worth would be 3-5x as much as the house hold that only has their primary residence.

I imagine I would want to relocate the most unfavorable.