Nonetheless, The surgery still has a positive impact on the individual. The fact that they can never actually become a male, or a female, is irrelevant. They are still benefiting from the treatment. And isn't this what this is all about? Treatment?THE DNA determines sex--NOT the mind or the brain or society...you are what you are. Proclivities and preferences be damned.
"feelings" are one thing--there isn't a "right feeling" or a "wrong feeling"--they are the realm of emotions and that is entirely subjective. What one "believes" can be tested against objective fact. One can test the "belief" that he/she is a female against the DNA (and generally genitals and sex organs). If the belief and the DNA do not coincide...That's a delusion.
The underlying problem is that you are building your argument upon "feelings"--feelings shift with the shifting sands and leave one with no clear direction and nothing to validate what their opinion is at the moment.
This is not to say a person who "feels" in the wrong skin can't try to change the skin, but as jallman kept saying--it is an illusion (although I believe he called it "gender pretend").
And yes, I have to base my argument on their feelings. How else does a psychologist help a client? It's as if Freud is telling his client,
"No, you are afraid of your Father..."
"I'm not so sure Dr. Freud...I haven't even seen my father before."
Of course I'm using hyperbole. If transsexuals have gone thru extensive counseling, then I would be convinced that the clinician would know if the individual was actually delusional or not, depending on how consistent the client is. I mean it isn't a "shifting sands" type thing. Transsexuals have this "in the wrong skin" feeling all of their lives. This isn't the fleeting -type of feeling that you are referring to.