"what happened to you?" trauma. don't ask other people that.
"how many of you are there?" we have absolutely zero idea, and also it's complicated.
"do you have DID?" nope, but seem to fit the OSDD criteria.
"why abbreviations?" privacy. if you can puzzle some of them out there's no prize.
"what's your opinion on syscourse?" the DSM-V isn't gonna suck you off, bro. i've had plenty of diagnoses 'changed' out from under me as psychiatrists redefined conditions but my experiences remained the same.