Dealt unusual problems like prostitutes, overdoses, break ins, etc. 

It sounds like you were suing for possession of the rental unit and nothing more (not unusual).  

This is not zero sum game.It is an unusual time, volume of properties on the market are way down, prices are up and competition is everywhere.  

Is it unusual for landlords to buy with cash?

Also, a seasoned co-op listing agent will know how to present buyers that have unusual income streams, are self employed, are maybe trying to time a sale and purchase, or are doing gifting, co-purchasing, or need guarantors, etc.

Nothing unusual about that.

That would be a pretty unusual city.

He apologized, said it's very unusual to have a case to fall through the cracks in his office, and promised to send me an amount to cover my investment and the interest I would have earned if held for all this time.

They can take a long time - so much that the market will have moved by the time it's over. 6-12 months is not unusual at all.The good news is, if you change your mind, you'll almost certainly be able to walk away because the bank will have exceeded the timelines in the contract.

It’s not unusual for the properties to sit on the market for 2-3 months in this neighborhood.