Every body is unique

I wanted to touch on something that really stuck in my mind from recent teachings...

“There is often more difference between people’s genitals that are the same gender than there are between people of different genders.”

So what does that mean? Well, to put it simply, it means we are all different. No surprise there in our heads, but then, Why do we insist on ‘teaching’ about sex, as if we are all the same?