I think I’m in the heavy minority because I really dislike the whole having children thing (maybe that’s me projecting lol). I’d rather focus on my adult sims and usually adopt an older child and then age them up to a teenager if I want a new character. I like starting from scratch in different neighborhoods and stuff, but it’s hard to stay engaged with one specific sim for very long. You can only get divorced so many times ya know?
I usually do rotational more honestly. But that being said I have a handful of single or married/no kids Sims. They usually become my trouble makers or my really good Sims. They’re either destroying marriages and causing all my drama or, they’re very into something whether it’s their lifetime wants or doing something for the community or something.
That being said, I find the children usually boring to play. I generally only leave them in baby/toddler/child life stages for a day or two before I age them up. Tend are ok.