For me it's that it clashes with my personality.
I am confident, outspoken, enthusiastic, sociable, ambitious, etc. but traits of ASD counter-act these - ASD is part of me and so part of my personality, but it leaves me feeling very stifled, it prevents me from doing so much and from showing my personality. I can only get so far with my social skills, ASD prevents me from moving any further forward and doing things how I want to do them. For me having ASD is something to try to overcome on a daily basis, but tragic then that I will never overcome it and never get to be who I am supposed to be.
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Bloodheart
Good-looking girls break hearts, and goodhearted girls mend them.