... don't you think that down the road there's going to be an EP that puts cows in those fields, and horses in those stalls?
Really, if you think about it, a sim riding a horse somewhere wouldn't work much different than the sim walking somewhere, would it? It would just be the horse walking/trotting/whatever with the sim on it.
A farming EP was something that everyone seemed to want with TS2 and although we did get a little bit of gardening with Seasons, we didn't get any farm animals. I really think TS3 might give that to us. My fingers are crossed, anyway!