P.B.J's and Playing Indoors

I told Evi today we weren't going to watch T.V. or play on the computer.. we were going to enjoy the outdoors. We went to the park with the kids, on bikes, and the dog. The kids had more fun with the dog than at the park, so once we had our fill of the park we came home for some lunch. Sebastian wanted a " jelly jelly sandwich" (P.B.J) and Evi a quesadilla. My question is, why do kids eat the center, and that's it? Evi went to her room "to rest" from her hard play, and I peeked in to see her playing her "My Littlest Pet Shop" game. I guess I never said no games, just no computer games..