Parenthood is very nice addon. The way your sims raises their children will affect them and it gives a whole new depth in your game. If you raise your child well they will get benefits such as good manners. If your sim raises them poorly they will get negative trait. It adds realism to the game and also kind of teaches the consequence of the choises the sim parents makes. CAS items and the furniture are cute too, the hairs are one of the best but it totally is up to you and your taste if thats something you like and want in the game. I am legacy and challenge gamer so for me this kind of family stuff is always welcome. So yeah, do gentle parenting and teach manner to sim kids and they will become good mannered empaths as adult and they will get such traits. Or if you are too hard on them they might get negative traits they suffer from. Those traits can benefit your sim in specific careers also, like if your sim child became empath it benefits them in some careers as adult.