Just like regular tenants, try to avoid S8 tenants who can barely afford your place.

His payment jumped up to an amount he couldn’t afford, so he stopped paying.

I also invest in other assets such as stocks, and private companies as well. for RE agents I see absolutely no conflict.. its their job.. not every agent starting out can afford to buy a rental.. and note very agent even wants to own a rental ( like me) I only like to deal in land when I sold RE to the public .

We don't have any significant storms, floods, earthquake, wild fire or hurricane risks, which keeps insurance cost affordable.

Voucher holders are wildely more risky than tenants who can afford to rent high end properties.

The more affordable price points, combined with a steady rental market, provide some peace of mind.

I searched for homes based on the mortgage I could afford.

So the added cashflow to property owners it they are willing to become the developer and increase density that tactic could help more owners stay than could otherwise afford to stay. 

I searched for homes based on the mortgage I could afford.

They're affordable enough to allow good cash flow, while also attracting decent tenant quality.