Seems like it has been too good for too long (low inventory, overseas money flowing in CA/NY/SEA/MIA/ATL and tech money, zero fed rates) but some bad signs are coming (all the major economies are slowing down, baby-boomers tightening their wallets and spending more on healthcare than discretionary, HELOC from 2005 are resetting, wide income gap, Millenniums cant' buy entry level houses, Houses sitting longer in some hot markets due to seller high expectations etc.). 

My tenant is an on call health care provider an comes and goes all day.

But we are living in a new economy with new variables to contend with.Dallas has ALWAYS been a big boom/bust real estate market versus Austin (steady up and to the right) and San Antonio (increasing but more slow and steady primarily because of aerospace and healthcare).  

Background: I am a self employed healthcare pharmacy IT consultant working 80 hours a week by day and a real estate agent and investor on the side.

It's why I don't mind paying more for health care so that others can reap the benefits of me doing so.

One of the greatest things about dentistry is full time for us is about 28-32 hours.

Healthcare is one of these professions.  

You could also join the National Guard or Navy Reserves (or Army if you prefer)...they both offer afffordable health care (Tricare Reseerve for Navy) and the service committments are part-time (one weekend a month) which might still allow you the freedom you are looking for.   

Would any of you rather bright souls (not being sarcastic) like to explain to me how we're going to afford Social Security, defense, debt service, health care, etc, over the next 20 years?

It's not like downtown San Diego or Irvine but there's a good mix of manufacturing, professional services, health care jobs and even a blossoming tech scene.