Selfish, wrong, denigrating to true service animals - I'm definitely in agreement with all points previously made. Service animals are granted their rights and access because they perform a necessary service to their owners.
You made no mention that having Buddah with you reduces the symptoms of your mental condition, only that the condition may be used as an avenue to get him service dog training. You said you don't NEED to take Buddah everywhere with you and are fine without him. So what "necessary service" is he performing for you then? But what irks me most is that you've admitted to wanting to "kink" the system and involving your doctor in order to do so - that's not something you want to proudly announce, and I'm wording it as lightly as I can. Please re-think.