Because I really hated doing that.
I mean, I loathed it with the angry, passionate fire of a thousand burning nuns.
Do you have to pet your animals in this one?
Yes and no. There's no Touch Screen glove, so you don't have to play the minigame every day, but every once in a while they'll get a little hand above their heads, so if you talk to them or try to pick them up (depending on the animal), you'll have to pet them. It doesn't happen that often, though, unless you have a lot of animals.