I really don't remember what the first mod that I ever used was, but it was most likely NRAAS from Sims 3. I was getting very tired of things that were destroying my game, and wanted to put a stop to it. I do recall was caused me to start using that mod, and it had to do with infants being killed off when I wasn't directly playing the household, and it happened to one of mine. Another was when one of my daughters moved out on her own, and the game moved her out of town, aka deleted my sim's child and her wife. The daughter-in-law was the child of the Wolff, a premade couple in the game.