Your argument for therapy animals is that they're like Buspar? The problem with that analogy is that when the Buspar doesn't work, they can just stop taking it. This doesn't happen with pets.
Unfortunately, physicians have a long history of ignoring systems issues and restricting their logic to the most immediate level. That's why we have antibiotic immunity.
If every psychiatrist was as loose with making their patients dog an Emotional Support Animal without considering the bigger picture, we'd be further stigmatizing the mentally ill, and particularly when it comes to housing, where they already have trouble. Putting patients on work release and disability sure makes you popular with your patients but it also contributes to stigmatization and also drains a very finite resource. You can write for handicapped placards because your patients have fatigue and they'll love you for it, but it makes it harder for those who need it more. Isn't Justice one of the big four in bioethics?
We need to approach dogs and disability like anything else: is it good treatment for their mental illness and what is the risk/benefit? And not taking the systems level issues into account is exactly why we have so much trouble getting help to those that actually need it.
Ok I see what you are saying about the systems issue - the handicapped placard is a good example. But cats and dogs are a different "system." Dogs and cats are a commodity that may overpopulate itself. Whereas handicapped placards are finite and we need to distribute them fairly. But, in theory, anyone can have a cat or a dog. In fact, from an animal welfare perspective it is helpful for stray animals to get adopted.
I do see that there would be limitations on this - i.e. if every psychiatric patient had a cat or dog the world would be overpopulated with pets, and if irresponsible patients have cats and dogs the pets may be mistreated. The former is an animal population issue and the latter is an animal welfare issue, I think. They all relate but they are not exactly analogous to the handicapped placard. And for the record I wouldn't recommend a pet for every patient. I take it about as seriously as I take recommending that the patient volunteer at the Humane Society.
That's the key here - I'm not labeling these animals as Emotional Support Anything. I'm just filling out a form that has two or three questions: 1) does the patient have some illness, 2) is the animal needed or helpful. I answer by saying 1) yes. and 2) maybe it's needed and probably it's helpful. Society can decide what to do next with these forms.
As for the landlords and employers, I'm just saying I don't care about their financial plight. The landlord isn't my patient. The patient is. It would be way beyond my scope of practice to contemplate whatever "systems" issues are involved in the landlord's reasoning for prohibiting dogs and the impact on the world economy that might occur if said landlord has to change that policy because too many psychiatrists fill out these forms. That's like asking me to think about the impact on the groundwater with each prescription for prozac that I think about writing.
I often say no to work release requests, if I think the patient will actually benefit more from working than from sitting around at home. But I don't refuse them because I am worried about the employer's bottom line. I'm not an advocate for the Landlord Association or the Boss's Association. And furthermore, sick leave practices are culturally and economically based. I could certainly reason that, well, in Germany they take 2 weeks off when they get a cold so my depressed patient ought to get 2 months off, or I could reason that, well, there are countries in Africa where people live on a subsistence basis and they don't get any "sick leave" at all so really, my patient shouldn't either. I'm not sure I'll ever figure that one out.
I absolutely almost never fill out disability paperwork. I don't believe the treating physician should generally do that.
I realize you can't get rid of a cat or a dog as easily as you can stop taking a medication. I'm just saying it might help for some but not all patients. That's where I see the similarity with buspar and neurontin. Beyond that I would not compare them.