Its safe to say that the social stigma that marijuana is harmful is going away.Still, it still has the perception of attracting a bad bunch of people and still operates as a cash business.

As you know, we live in a society where you get sued for looking at somebody the wrong way.

Typically and underwriter will have an issue when someone makes a move from a a duplex to a triplex or a SFR to a multi as the perception is that you are doing it for investment purposes and thus the motivation does not jive with what FHA is used for. 

I've heard the same claim with "walking distance" because it may offend people in wheelchairs.Honestly, our entire society needs to grow up.

It's up to you what kind of a landlord you plan on being over your real estate investing career but you do have an unwritten covenant with the society at large to serve, and protect, In other words to be responsible.

People deserve a second chance, and that's a reason why he was not given the death penalty..If we all chase him out and make him jobless and homeless, is this a better situation for society? 

If you forgot we live in a democratic and capitalistic society.

For the sake of society and business, contracts should be taken seriously by all parties.In the example presented the buyer straight up neglected to act as agreed by date agreed. 

You are spot on with your perception of California.

We are encouraging weakness and, like an untrained emotional support animal, it will come back to bite us as a society.