So when I played Sims 3, I never had any mods, so story progression was pretty non existent. My gameplay style didn't really need to worry about this, though, as I never played legacy and usually didn't go past the second generation, and would add my own townies if required. I never played multiple households in sims 3 as I was worried my main sim household would progress in ways I didn't want to, the worst being move away.
So apparently in 4, there is basically no story progression, so if you want new generations, townies to have jobs etc, you have to play them. I did read that households don't randomly just up and leave like in sims 3, so that fear is gone.
So I'm wondering what WILL happen if I play other households for a while for the purposes of relationships, jobs, having babies. What happens to my main household while I play the other families? Does everything stay pretty much stagnant with them? Being there is no real story progression, I presume nothing changes? I'm worried about accidental death, like in sims 3 you'd get notifications someone had been hit by lightning or drowned, but I think that happened when the town was overpopulated?
Bottom line is, will my main household remain pretty much the same as I left it, or will things have changed when I play them again?