On the Fact that In this Lunatic World of Ours, Thoughts and Feelings Determine One's Gender......and Nothing Else (i.e., Race, Height, Age, Skin Color, Species, etc.)

This despite the fact that there exists thousands of actual BIOLOGICAL differences between the two identifiable genders (the only other one being hermaphrodite). And how is this mindset of only allowing gender to be determined by feelings not itself bigoted? I mean, if I want to identify as a 6'8" power forward......Come on!