Yes, actually, there are scientific traits that determine what gender a face is recognized as. There are specific dimensions that are considered male, and specific dimensions that are considered female. Besides, if someone had a big ugly growth on their neck that wasn't cancerous but still quite intrusive, insurance would cover it. It's not about feeling pretty, it's about seeing a person of the appropriate sex staring back at you. This is something I feel dysphoric about, and I believe I should have the right to change it because it causes me significant distress on a daily basis.