Sure, by the numbers, assuming people are straight is a safe bet. Most people are. But assumptions are dangerous. This particular assumption implies to my son that there is something wrong him for being other than straight. And there's not. He should be exactly who he is.
I have a small wooden plaque in my kitchen that reads, "My goal in life is to be the person my dog thinks I am." I suppose that when people read it they see it like a bumper sticker. Curious and meaningless. But to me, it's profound.
First day of kindergarten, 1964: My teacher is Mrs. Condon. She has very big hair and is clearly inferior to my mother. There are zero Tinker Toys in my classroom, which is clearly inferior to my bedroom. Mrs. Condon makes a fuss about the colored chalk. I've seen better