I just realized these science babies are gonna make 100 baby challenges so much easier. You don't even have to romance the sims. You only have to befriend them. And if you have the idea of the sim marrying or dating only certain sims, that works out. Because you won't have old romantic interests coming around, that you have to ask to "just be friends".
You still have to raise them. You can just avoid pregnancy.
And if you chose to get the mod that adds the option to be pregnant, you have the choice.
Plus it makes it easier to have kids with like Grimm or Father Winter. You just don't have to do it the long way.