"I still don't see how that changes anything. She still knows when she's tired. Women have been having children since the start of evolution," she said, not understanding what Harry's problem was. "And why are you distracted when she's the one pregnant? You're being as ridiculous as Ron is."
Hermione was certain that they'd have more than one. If Ginny had given up her career to pop out children, there would be more than one. "Harry, you don't seem to understand. His compromise is to wait until I want a child, but I doubt I'll ever want one. I might have one for him, but I don't want a child. It's not really so hard to understand. The problem is that he'll wait so long that he'll resent me and I'll have one for him and I'll resent him. Love doesn't stop people from resenting each other. A surrogate would truly solve the problem."