People like doing that though. Not being an evil deity in the mouse-for-heavenly-hand games, but for trying to make things right in every way. Just ask fans of anything Will Wright, anything with Tycoon at the end of it, and countless others titles. But as for the Sims titles, they haven't been exactly realistic. As time progresses, the games get more advanced, and here's what the Sims 3 has new in stock.
First is the "buff" system, which is basically a look at how the Sims will feel in the long term. Meaning if something happens to them, they'll feel some way, and that's exactly what it is. So if your Sim has a hot streak of getting awesome stuff happen to him/her, expect them to do a better job at following commands, doing their job faster, etc.
The second is an inventory system for, well, inventorying! Duh. Having items on hand can be immensely useful as you might imagine.
Don't get too excited now, because this is just the early stuff. We'll probably hear much more outrageous stuff in the future.