It's not just a simple case of engaging in WooHoo - there's pregnancy odds to consider, genders, twins and triplets, where to give birth, as well as considering adoption. There are many ways to play the game and you don't need to have Sim babies if you don't want to however, if you plan on playing a legacy game with multiple generations of the same Sim family, you'll probably want to have your Sims trying for babies pretty regularly. Just like in real life, pregnancy is a popular way for Sims to.
