Honestly the "but Peeta wanted kids so bad" line from the Mockingjay epilogue is really funny to me because for three books Katniss has been projecting her desire for children onto a guy who hasn't really ever verbally expressed any interest in having kids, so I do genuinely think the whole "kids vs. no kids" debate happened entirely internally for Katniss and one day she just went "ok, you win, let's have kids" and Peeta's at the kitchen table like"?????? Ok??????"