You become immune from employment issues and the PM takes that responsibility.In Calif, 16 or more units REQUIRE an on site, 24/7 manager by law.

For context, this place and the other calc I posted in another thread are in a very desirable, residential area next to an Ivy league school and all the grad school- the tenants (I was one a few years ago) are very high quality, its largely grad school/professor/staff rentals, and the home values historically have been largely immune to changes in the housing market- and probably as such, they've gotten really expensive.

The point to all of this (to me) is to A)Build up enough independent income such that you're largely immune from needing "a job", B)Have enough money such that you can provide some security for your family,C)Have enough money so that you can provide funds to things important to you (charity, church, etc),D)Have enough money so that you can enjoy things in life that genuinely make you happy.If you are all the way down to D, then I personally don't see what is wrong with it.

@Russell Brazil  I agree with Russ totally depends on what kind of real estate.. keep in mind that when you ask this on BP 90% of those on this site will gravitate to the only real estate is rental either sfr or small plexs or MF.. there are many many other types of real estate .take for instance in my mind one of the safest and most passive is investing in land in the path of progress.. pay cash and hold it.. nothing to it.. over time if you buy right or you buy a timber tract with middle age marketable timber species like Doug Fir or white pine  west  East  … these are very solid long term safe investments that you just make and sit and wait.some of the biggest money made in real estate though is land in the path of progress.. this keeps you immune from the ups and downs and risks of tenants.. 

This is because the federal government is a "sovereign" and they are entitled to something called a "sovereign immunity."

There's certainly an undertow of greed prevalent in the world and this industry is not immune to it; and for that reason I ask, when is enough enough?

Some of them have become SO immune to criticism they feel justified in sending out some ridiculous email like the one you received. 

Househacking is out since I have a son with immune issues I can’t risk his health to live with other people so I’ll probably go SFH and work up to units.

Whatever you do, keep moving.Exercise has a lot of benefits, including: Decreasing stress and anxietyImproving overall moodBoosting energy levelsLosing weightImproving circulationImproving bone densityBoosting the immune systemImproving memoryLet’s face it, we can all use at least a few of these benefits from time to time.

Also, Pittsburgh remains one of the best cash flowing cities in the country and has historically been relatively immune to dramatic price swings that certainly most coastal cities have experienced.If you'd like to learn more as part of your due diligence, just let me know if I can help.