I sort of keep a utility Sim. It's a stay at home mom, dad, aunt, uncle, brother, sister, whatever. I don't worry over much about getting it's LTW done as it's main purpose is to cook, clean, garden and in general keep the household running smoothly so my main characters can do what they must to achieve their goals. But then I'm working a legacy and it just makes it faster/easier if you don't have to fuss with the little details like unclogging a jon or something.