I wouldn't say the internet brought them more to light; it accelerated their spread, and that's what's brought them more to light. 

The vision you initially had for your property was unrealistic for a rental property and you will not do that again.Rental properties need to be brought to a basic standard of living, spruced up fresh and pass inspection.

Instead of renting it again we decided to sell it and brought in a couple real estate people to get some ideas and it wasn’t great for they told us that our home had been vandalized and needed plenty of fixing which we already knew.

It was actually brought to us at a multi-family convention here in Detroit.   

He brought up the topic of lawsuits surrounding apartment buyers/sellers.I asked him, "what is the basis behind some of these lawsuits?"

Since this is being brought up in the news, I have to wonder how runaway AKA hyperinflation might influence real estate investing?

If I lose my job *and* there is vacancy, then similar to the above answer, I'd be able to rely on the extra money brought in by the other non-vacant rentals.

I also feel like there's a good point brought up here about how do we define active.

This process would have brought to light the open/expired permits on your property.

If he asks for a reason, I would just state that he repeatedly violated the house rules, even after the violations were brought to his attention.