Thank you for bringing this thread back because I loved writing in the old thread. I always had something to say and I didn't want to make news threads to say it. That being said, I'm currently playing a household that has a guy, his future wife and a horse.
He likes gardening, she's has the neat trait. He keeps going to research the plants in the garden and she keeps cleaning. They are on full autonomy. I didn't realize, and I've heard it numerous times, that Sims do automatous things based on their traits, likes and preferences. In my defense, this is the first time I've fully played on full autonomy so I am seeing it in full action. Now don't me wrong, I still think Sims aren't smart most of the time, but it's cool to see their actions are usually based on their traits and their preferences.
They keep also automatously chatting with each other and it's driving me crazy. I don't know if that's a bug or if it's just how they are.