Don’t be so negative, says the cab driver. You’re young, you can still have children. I have five! How did this conversation happen, again? As he drives, he shows me pictures of his kids on his phone, holding it back over his shoulder. It’s rather difficult, I say, Without a uterus. It is not polite to say that I have no uterus. People react as though I’ve bullied them, stepped over a line. But they…