Miri,
I think you are right about how it is possible to "fall in love" with one's diagnosis. I was so relieved to find out I was DID (after I quit denying it for years) that for a period of time I kinda got all "into it" and focused on it too much. I don't think I would be as well as I am now if I had not "fallen out of love with my dx". For me it almost became an excuse for not striving to get functional again; I sort of wanted everyone to feel sorry for me and cut me lots of slack because my life had been excruciatingly painful and difficult. For a while I just really wanted people to affirm me being DID, some kind of validation of my suffering. Sounds kinda weird trying to explain it. Not even sure I really got what you were saying Miri. But that is how it was to me for a while - several years, maybe even 5 years.
This is about how I experienced being DID, it is not intended to say anyone else does this, I am not accusing or judging anyone but myself.
It IS an interesting question. Hugs if you want them,

Leslie and her pixies