How do you keep it interesting?

I like a story, sure the reality is if you dedicate some time to a reasonably sized family you should see everything but for those of us that find the thing we prefer that doesn't matter. Maybe for you, you need a story from a let's play to stick to copying doesn't mean anything everyone can have a family, start up some drama or stay chill..stick to building or creating sims or content whatever, that's just how the game is. Maybe try a story that appeals to you but keep everything on short if you have seasons pick the shortest amount and turn aging on short so you're only with sims a limited time and almost always preparing to move on. Then of course maybe that's also just what you like starting over getting in some play time then moving on completely that's fine too.