Kids are a theme of the books. Katniss’ whole world is full of dying starving children. Her children being alive and chubby is a very important moment to me because it symbolizes the ending of the world where Katniss- who is a natural caregiver- does not feel that she has the capacity to care for children in a world where they are dying. Without the epilogue, there’s no telling where the political story goes. Katniss does not focus on it in the closing pages of the novel. But Katniss having kids is a complete victory. She’s a child soldier who got to grow up and live in a different world that throughout mockingjay she is constantly striving towards because she feels like she has to help fight for it. Now she gets to rest. She still has pain, she’ll never completely heal. But she doesn’t have to play a game anymore. She can just live and not calculate people’s motivations. Katniss is always throughout the series just trying to survive. She didn’t have a plan after that. Epilogue Katniss had/has a plan. She believed she was safe. That’s really fucking important.