However, I am surprised to hear he doesn't carry insurance and bond.

I have not attended the meetup so don't take my word as bond here but I'm sure they should be able to help out.https://www.meetup.com/Atlanta-Airbnb/

Is there anything I can do about this except grit my teeth and not renew him when the lease is up?

And maybe I get a 1.25% return from bonds or a savings account or some other risk-free-ish instrument.I’ve even considered paying down mortgages.

., The world of large commercial scares people who have cut their teeth on residential. 

SE FTW fails miserably in that area, while Balch Springs is in Mesquite ISD, which is not great, but actually not terrible, and they recently passed a bond measure to for Mesquite ISD to improve the schools.

Any deposit or compliance bond made by the defaulting bidder shall secure payment of the amount, if any, for which the defaulting bidder remains liable under this section"

Plus, my Grandma got him $10,000 in Bonds many years ago and that will be a great graduation present in 2 years too.He would have had all kinds of student debt if it was not for all the cash flow in my RE.    

When REI can not compete with other vehicles, like stock, REITs, bond, etc, money will leave REI.There might still be deals out there, for seasoned investors.

Bond Financing: Type of financing that includes a promise to repay the principal along with interest by a specified date.