Lol no wonder you have such a twisted view of the world - I have zero anger issues and I have personally managed multiple rentals for more than a decade. I have many tenants that have been with me for many years that I have looked after through good times and bad and I have encountered more than my share of dirt bags that have no respect despite how much you try to help them.
If I had anger issues about being a landlord I would have given up being one years ago.