When I had a class on Homelessness and Public Policy, the professor said something like "I'd drink too if I were homeless. The sidewalk is cold and hard."

While I appreciate you bringing up that element, I actually think it's more complicated than that. In a nutshell, I think addiction generally arises out of other problems, a la the phrase "driven to drink." Blaming everything on "You drink" fails to address the underlying problems concerning why you drink.

But I don't think elaborating at length while being described as having an entitled attitude because I think I should be able to get compensation for work I can do that other people clearly do value to some degree is likely to be constructive.