The agents are paid by the seller and maybe the seller saves 1% (5% instead of 6% commission) but it's negligible and you'll never see their real estate agreement to verify.  

Nothing will protect you from negligence.

It seems to me that excessive candle use could be seen as negligence and that both the tenants and us would be sued in the case that fire caused by them created losses for others in the building.

The cost of running an LLC in my state is negligible. 

They are negligible if any at all.

However, insurance is limited because it only protects you from one type of liability: accidents/negligence.

It sounds like a great metric to use, but consider: A PM with 10 owners who lost 2 owners because they sold their rentals at the peak of the market has 80% retention, while a PM with 500 owners who got fired by 50 of them for being negligent has 90% retention.

Lastly, PMI is negligible as long as your cash flow makes sense, and when you have the opportunity to purchase a property with less cash invested the benefits of opportunity cost and saving that cash for other investments almost always outweighs the cost of PMI.

People are so negligent.

My Midwest investment properties (SFRs/Apartment complexes) are exceptional for cashflow and I’m not too concerned with the lack of or negligible appreciation growth.