How many Sim projects/stories/families do you maintain or creating?

I really enjoy discovering the backstories and lives of the pre-made townies, especially the ones introduced in the trailers. I have started a new way of rotational play after just playing through a career, aspiration, legacy (fail at that!). I now play by neighborhood. I'm slowly remodeling/renovating/building all the lots in the worlds and giving makeovers to the townies and playing them as I go. This has been fun, especially since I have a cohesive world story of my sims. I am a benevolent watcher.