Sims 2

Rotational player here. In my neighbourhood, I only have a few single Sims. If I do have them, I usually use the LTW as a guide on what kind of Sim I want them to be. If I am not following the LTW, I would either let them open a business, be very passionate in their hobby/interest or mess around their neighbourhood (this is for Romance sims who aim to mess around with as many ppl as they can). There are many ways you can do it, these are the ones that I have done in my current neighbourhood gameplay!

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.

I am the exact opposite than you. I love the whole having children thing. The reason is that it allows me to be a bit creative on the stories that I want to tell.